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TI-2021-07475 Aliases CVE-2021-25215GHSA-r4mp-379r-9756

Reachable assertion in ISC BIND9

Priority MEDIUM 46CWE-617Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 35 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-617.

Summary

In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

Why it matters now

EPSS 0.11695 96th percentileScored 2026-11-07
Fix Partial Red Hat: 10 advisoriesRed Hat: 35 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ISCBIND9Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30; Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14; Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1; Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1; Development Branch 9.17 9.17.0 through versiosn before 9.17.12—No fix listedCNA
  • BIND9 VendorISC Affected Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30; Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14; Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1; Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1; Development Branch 9.17 9.17.0 through versiosn before 9.17.12 Fixed in — No fix listed CNA

CPE configurations NVD · 46

CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*9.0.0 to before 9.11.31; 9.12.0 to before 9.16.15; 9.17.0 to before 9.17.12VulnerableISC
cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:*9.9.3 s1VulnerableISC
cpe:2.3:a:isc:bind:9.9.12:s1:*:*:supported_preview:*:*:*9.9.12 s1VulnerableISC
cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:*9.9.13 s1VulnerableISC
cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:*9.10.5 s1VulnerableISC
cpe:2.3:a:isc:bind:9.10.7:s1:*:*:supported_preview:*:*:*9.10.7 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*9.11.3 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*9.11.5 s3VulnerableISC
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* Versions 9.0.0 to before 9.11.31; 9.12.0 to before 9.16.15; 9.17.0 to before 9.17.12 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:* Versions 9.9.3 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.9.12:s1:*:*:supported_preview:*:*:* Versions 9.9.12 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:* Versions 9.9.13 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:* Versions 9.10.5 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.10.7:s1:*:*:supported_preview:*:*:* Versions 9.10.7 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:* Versions 9.11.3 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:* Versions 9.11.5 s3 Vulnerable ·ISC
Show 36 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*9.11.5 s5VulnerableISC
cpe:2.3:a:isc:bind:9.11.5:s6:*:*:supported_preview:*:*:*9.11.5 s6VulnerableISC
cpe:2.3:a:isc:bind:9.11.6:s1:*:*:supported_preview:*:*:*9.11.6 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:*9.11.7 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:*9.11.8 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.12:s1:*:*:supported_preview:*:*:*9.11.12 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*9.11.21 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.27:s1:*:*:supported_preview:*:*:*9.11.27 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.29:s1:*:*:supported_preview:*:*:*9.11.29 s1VulnerableISC
cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:*9.16.8 s1VulnerableISC
cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*9.16.11 s1VulnerableISC
cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*9.16.13 s1VulnerableISC
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:500f:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:*7.4.0 – 7.7.1VulnerableOracle
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*before 1.0.1.1VulnerableSiemens
  • cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:* Versions 9.11.5 s5 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.5:s6:*:*:supported_preview:*:*:* Versions 9.11.5 s6 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.6:s1:*:*:supported_preview:*:*:* Versions 9.11.6 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:* Versions 9.11.7 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:* Versions 9.11.8 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.12:s1:*:*:supported_preview:*:*:* Versions 9.11.12 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:* Versions 9.11.21 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.27:s1:*:*:supported_preview:*:*:* Versions 9.11.27 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.29:s1:*:*:supported_preview:*:*:* Versions 9.11.29 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:* Versions 9.16.8 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:* Versions 9.16.11 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:* Versions 9.16.13 s1 Vulnerable ·ISC
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:500f:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* Versions 7.4.0 – 7.7.1 Vulnerable ·Oracle
  • cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* Versions before 1.0.1.1 Vulnerable ·Siemens

Remediation

Red Hat 10 advisories

  • RHSA-2021:2024 Released 2021-05-19 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) bind-32:9.11.13-6.el8_2.3, bind-chroot-32:9.11.13-6.el8_2.3, bind-devel-32:9.11.13-6.el8_2.3 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) bind-32:9.11.13-6.el8_2.3, bind-export-devel-32:9.11.13-6.el8_2.3, bind-export-libs-32:9.11.13-6.el8_2.3
  • RHSA-2021:2028 Released 2021-05-19 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.1) bind-32:9.11.4-26.P2.el8_1.5, bind-chroot-32:9.11.4-26.P2.el8_1.5, bind-devel-32:9.11.4-26.P2.el8_1.5 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) bind-32:9.11.4-26.P2.el8_1.5, bind-export-devel-32:9.11.4-26.P2.el8_1.5, bind-export-libs-32:9.11.4-26.P2.el8_1.5
  • RHSA-2021:1989 Released 2021-05-18 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 8) bind-32:9.11.26-4.el8_4, bind-chroot-32:9.11.26-4.el8_4, bind-devel-32:9.11.26-4.el8_4 +12
    • Red Hat Enterprise Linux BaseOS (v. 8) bind-32:9.11.26-4.el8_4, bind-export-devel-32:9.11.26-4.el8_4, bind-export-libs-32:9.11.26-4.el8_4
Show 7 more Red Hat advisories
  • RHSA-2021:1478 Released 2021-05-03 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bind-32:9.9.4-74.el7_6.7, bind-libs-32:9.9.4-74.el7_6.7, bind-libs-lite-32:9.9.4-74.el7_6.7 +2
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) bind-32:9.9.4-74.el7_6.7, bind-chroot-32:9.9.4-74.el7_6.7, bind-devel-32:9.9.4-74.el7_6.7 +7
    • Red Hat Enterprise Linux Server EUS (v. 7.6) bind-32:9.9.4-74.el7_6.7, bind-chroot-32:9.9.4-74.el7_6.7, bind-libs-32:9.9.4-74.el7_6.7 +8
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) bind-devel-32:9.9.4-74.el7_6.7, bind-devel-32:9.9.4-74.el7_6.7.ppc, bind-lite-devel-32:9.9.4-74.el7_6.7 +9
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) bind-32:9.9.4-74.el7_6.7, bind-chroot-32:9.9.4-74.el7_6.7, bind-libs-32:9.9.4-74.el7_6.7 +6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) bind-devel-32:9.9.4-74.el7_6.7, bind-lite-devel-32:9.9.4-74.el7_6.7, bind-pkcs11-32:9.9.4-74.el7_6.7 +5
  • RHSA-2021:1477 Released 2021-05-03 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) bind-32:9.11.4-9.P2.el7_7.5, bind-export-libs-32:9.11.4-9.P2.el7_7.5, bind-libs-32:9.11.4-9.P2.el7_7.5 +3
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) bind-32:9.11.4-9.P2.el7_7.5, bind-chroot-32:9.11.4-9.P2.el7_7.5, bind-devel-32:9.11.4-9.P2.el7_7.5 +8
    • Red Hat Enterprise Linux Server EUS (v. 7.7) bind-32:9.11.4-9.P2.el7_7.5, bind-chroot-32:9.11.4-9.P2.el7_7.5, bind-export-libs-32:9.11.4-9.P2.el7_7.5 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) bind-devel-32:9.11.4-9.P2.el7_7.5, bind-devel-32:9.11.4-9.P2.el7_7.5.ppc, bind-export-devel-32:9.11.4-9.P2.el7_7.5 +7
  • RHSA-2021:1479 Released 2021-05-03 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) bind-32:9.9.4-51.el7_4.6, bind-chroot-32:9.9.4-51.el7_4.6, bind-libs-32:9.9.4-51.el7_4.6 +6
    • Red Hat Enterprise Linux Server E4S (v. 7.4) bind-32:9.9.4-51.el7_4.6, bind-chroot-32:9.9.4-51.el7_4.6, bind-libs-32:9.9.4-51.el7_4.6 +6
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) bind-devel-32:9.9.4-51.el7_4.6, bind-lite-devel-32:9.9.4-51.el7_4.6, bind-pkcs11-devel-32:9.9.4-51.el7_4.6 +2
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) bind-devel-32:9.9.4-51.el7_4.6, bind-lite-devel-32:9.9.4-51.el7_4.6, bind-pkcs11-devel-32:9.9.4-51.el7_4.6 +2
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) bind-devel-32:9.9.4-51.el7_4.6, bind-lite-devel-32:9.9.4-51.el7_4.6, bind-pkcs11-devel-32:9.9.4-51.el7_4.6 +2
    • Red Hat Enterprise Linux Server TUS (v. 7.4) bind-32:9.9.4-51.el7_4.6, bind-chroot-32:9.9.4-51.el7_4.6, bind-libs-32:9.9.4-51.el7_4.6 +6
  • RHSA-2021:1475 Released 2021-05-03 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux Server AUS (v. 7.3) bind-32:9.9.4-50.el7_3.6, bind-chroot-32:9.9.4-50.el7_3.6, bind-libs-32:9.9.4-50.el7_3.6 +6
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) bind-devel-32:9.9.4-50.el7_3.6, bind-lite-devel-32:9.9.4-50.el7_3.6, bind-pkcs11-devel-32:9.9.4-50.el7_3.6 +2
  • RHSA-2021:1476 Released 2021-05-03 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux Server AUS (v. 7.2) bind-32:9.9.4-29.el7_2.11, bind-chroot-32:9.9.4-29.el7_2.11, bind-libs-32:9.9.4-29.el7_2.11 +6
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) bind-devel-32:9.9.4-29.el7_2.11, bind-lite-devel-32:9.9.4-29.el7_2.11, bind-pkcs11-devel-32:9.9.4-29.el7_2.11 +2
  • RHSA-2021:1469 Released 2021-04-29 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux Client (v. 7) bind-32:9.11.4-26.P2.el7_9.5, bind-export-libs-32:9.11.4-26.P2.el7_9.5, bind-libs-32:9.11.4-26.P2.el7_9.5 +3
    • Red Hat Enterprise Linux Client Optional (v. 7) bind-32:9.11.4-26.P2.el7_9.5, bind-chroot-32:9.11.4-26.P2.el7_9.5, bind-devel-32:9.11.4-26.P2.el7_9.5 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) bind-32:9.11.4-26.P2.el7_9.5, bind-chroot-32:9.11.4-26.P2.el7_9.5, bind-devel-32:9.11.4-26.P2.el7_9.5 +8
    • Red Hat Enterprise Linux Server (v. 7) bind-32:9.11.4-26.P2.el7_9.5, bind-chroot-32:9.11.4-26.P2.el7_9.5, bind-export-libs-32:9.11.4-26.P2.el7_9.5 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) bind-devel-32:9.11.4-26.P2.el7_9.5, bind-devel-32:9.11.4-26.P2.el7_9.5.ppc, bind-export-devel-32:9.11.4-26.P2.el7_9.5 +7
    • Red Hat Enterprise Linux Workstation (v. 7) bind-32:9.11.4-26.P2.el7_9.5, bind-chroot-32:9.11.4-26.P2.el7_9.5, bind-export-libs-32:9.11.4-26.P2.el7_9.5 +7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) bind-devel-32:9.11.4-26.P2.el7_9.5, bind-export-devel-32:9.11.4-26.P2.el7_9.5, bind-lite-devel-32:9.11.4-26.P2.el7_9.5 +3
  • RHSA-2021:1468 Released 2021-04-29 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux Server (v. 6 ELS) bind-32:9.8.2-0.68.rc1.el6_10.11, bind-chroot-32:9.8.2-0.68.rc1.el6_10.11, bind-libs-32:9.8.2-0.68.rc1.el6_10.11 +1
    • Red Hat Enterprise Linux Server Optional (v. 6 ELS) bind-devel-32:9.8.2-0.68.rc1.el6_10.11, bind-sdb-32:9.8.2-0.68.rc1.el6_10.11

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    ISC BIND9 — DSA-4909

    3 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-07476 A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attackPriority HIGH 83
    • TI-2021-07474 A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedlyPriority LOW 38
    Show all 3 records → Advisory →
  • Advisory ·

    ISC BIND9 — FEDORA-2021-ace61cbee1

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-07474 A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedlyPriority LOW 38
    Show all 2 records → Advisory →
Show 1 more group
  • Advisory ·

    ISC BIND9 — FEDORA-2021-47f23870ec

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-07474 A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedlyPriority LOW 38
    Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:1989
Red Hat Enterprise Linux AppStream EUS (v. 8.1)Fixed RHSA-2021:2028
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2021:2024
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:1989
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2021:2028
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:2024
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2021:1478
Red Hat Enterprise Linux ComputeNode EUS (v. 7.7)Fixed RHSA-2021:1477
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2021:1478
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7)Fixed RHSA-2021:1477
Red Hat Enterprise Linux Server (v. 6 ELS)Fixed RHSA-2021:1468
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux Server AUS (v. 7.2)Fixed RHSA-2021:1476
Red Hat Enterprise Linux Server AUS (v. 7.3)Fixed RHSA-2021:1475
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2021:1479
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2021:1479
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2021:1478
Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2021:1477
Red Hat Enterprise Linux Server Optional (v. 6 ELS)Fixed RHSA-2021:1468
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux Server Optional AUS (v. 7.2)Fixed RHSA-2021:1476
Red Hat Enterprise Linux Server Optional AUS (v. 7.3)Fixed RHSA-2021:1475
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2021:1479
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2021:1479
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2021:1478
Red Hat Enterprise Linux Server Optional EUS (v. 7.7)Fixed RHSA-2021:1477
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2021:1479
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2021:1479
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:1469
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2021:1478
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2021:1478
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-25215
  2. 2026-10-03 Alias added: GHSA-r4mp-379r-9756

References

Patch 2

Advisory 10

  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
  • TI-2021-07476 A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack CVSS 3.1CRITICAL 9.8
  • TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
  • TI-2020-06910 A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c CVSS 3.1HIGH 7.5
  • TI-2016-02320 buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x… CVSS 3.0HIGH 7.5
See all 192 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences