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TI-2023-02649 Aliases CVE-2023-2828GHSA-v668-ccv8-m5gx

named's configured cache size limit can be significantly exceeded

Priority MEDIUM 45CWE-770Published · 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
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit. It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03696 89th percentileScored 2026-11-07
Fix Fixed Red Hat: 10 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ISCBIND 99.11.0 – 9.16.41; 9.18.0 – 9.18.15; 9.19.0 – 9.19.13; 9.11.3-S1 – 9.16.41-S1; 9.18.11-S1 – 9.18.15-S1—No fix listedCNA
  • BIND 9 VendorISC Affected 9.11.0 – 9.16.41; 9.18.0 – 9.18.15; 9.19.0 – 9.19.13; 9.11.3-S1 – 9.16.41-S1; 9.18.11-S1 – 9.18.15-S1 Fixed in — No fix listed CNA

CPE configurations NVD · 21

CPEVersionsRoleVendor
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*9.11.0 – 9.16.41VulnerableISC
cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*9.11.3 – 9.16.41VulnerableISC
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*9.18.0 – 9.18.15VulnerableISC
cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*9.18.11 – 9.18.15VulnerableISC
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*9.19.0 – 9.19.13VulnerableISC
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*12.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*38VulnerableFedoraproject
  • cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* Versions 9.11.0 – 9.16.41 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:* Versions 9.11.3 – 9.16.41 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* Versions 9.18.0 – 9.18.15 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:* Versions 9.18.11 – 9.18.15 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* Versions 9.19.0 – 9.19.13 Vulnerable ·ISC
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
Show 11 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*not specified by NVDVulnerableNetApp
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:h410s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
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:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·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: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:h410c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·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

Remediation

Red Hat 10 advisories

  • RHSA-2023:4332 Released 2023-07-31 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) bind-32:9.11.26-4.el8_4.2, bind-chroot-32:9.11.26-4.el8_4.2, bind-devel-32:9.11.26-4.el8_4.2 +12
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) bind-32:9.11.26-4.el8_4.2, bind-chroot-32:9.11.26-4.el8_4.2, bind-devel-32:9.11.26-4.el8_4.2 +12
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) bind-32:9.11.26-4.el8_4.2, bind-chroot-32:9.11.26-4.el8_4.2, bind-devel-32:9.11.26-4.el8_4.2 +12
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bind-32:9.11.26-4.el8_4.2, bind-export-devel-32:9.11.26-4.el8_4.2, bind-export-libs-32:9.11.26-4.el8_4.2
    • Red Hat Enterprise Linux BaseOS E4S (v.8.4) bind-32:9.11.26-4.el8_4.2, bind-export-devel-32:9.11.26-4.el8_4.2, bind-export-libs-32:9.11.26-4.el8_4.2
    • Red Hat Enterprise Linux BaseOS TUS (v.8.4) bind-32:9.11.26-4.el8_4.2, bind-export-devel-32:9.11.26-4.el8_4.2, bind-export-libs-32:9.11.26-4.el8_4.2
  • RHSA-2023:4152 Released 2023-07-18 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux Client (v. 7) bind-32:9.11.4-26.P2.el7_9.14, bind-export-libs-32:9.11.4-26.P2.el7_9.14, bind-libs-32:9.11.4-26.P2.el7_9.14 +3
    • Red Hat Enterprise Linux Client Optional (v. 7) bind-32:9.11.4-26.P2.el7_9.14, bind-chroot-32:9.11.4-26.P2.el7_9.14, bind-devel-32:9.11.4-26.P2.el7_9.14 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) bind-32:9.11.4-26.P2.el7_9.14, bind-chroot-32:9.11.4-26.P2.el7_9.14, bind-devel-32:9.11.4-26.P2.el7_9.14 +8
    • Red Hat Enterprise Linux Server (v. 7) bind-32:9.11.4-26.P2.el7_9.14, bind-chroot-32:9.11.4-26.P2.el7_9.14, bind-export-libs-32:9.11.4-26.P2.el7_9.14 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) bind-devel-32:9.11.4-26.P2.el7_9.14, bind-devel-32:9.11.4-26.P2.el7_9.14.ppc, bind-export-devel-32:9.11.4-26.P2.el7_9.14 +7
    • Red Hat Enterprise Linux Workstation (v. 7) bind-32:9.11.4-26.P2.el7_9.14, bind-chroot-32:9.11.4-26.P2.el7_9.14, bind-export-libs-32:9.11.4-26.P2.el7_9.14 +7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) bind-devel-32:9.11.4-26.P2.el7_9.14, bind-export-devel-32:9.11.4-26.P2.el7_9.14, bind-lite-devel-32:9.11.4-26.P2.el7_9.14 +3
  • RHSA-2023:4153 Released 2023-07-18 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) bind-32:9.11.13-6.el8_2.5, bind-chroot-32:9.11.13-6.el8_2.5, bind-devel-32:9.11.13-6.el8_2.5 +12
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) bind-32:9.11.13-6.el8_2.5, bind-chroot-32:9.11.13-6.el8_2.5, bind-devel-32:9.11.13-6.el8_2.5 +12
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) bind-32:9.11.13-6.el8_2.5, bind-chroot-32:9.11.13-6.el8_2.5, bind-devel-32:9.11.13-6.el8_2.5 +12
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bind-32:9.11.13-6.el8_2.5, bind-export-devel-32:9.11.13-6.el8_2.5, bind-export-libs-32:9.11.13-6.el8_2.5
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) bind-32:9.11.13-6.el8_2.5, bind-export-devel-32:9.11.13-6.el8_2.5, bind-export-libs-32:9.11.13-6.el8_2.5
    • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) bind-32:9.11.13-6.el8_2.5, bind-export-devel-32:9.11.13-6.el8_2.5, bind-export-libs-32:9.11.13-6.el8_2.5
Show 7 more Red Hat advisories
  • RHSA-2023:4154 Released 2023-07-18 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) bind-32:9.11.4-26.P2.el8_1.7, bind-chroot-32:9.11.4-26.P2.el8_1.7, bind-devel-32:9.11.4-26.P2.el8_1.7 +12
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) bind-32:9.11.4-26.P2.el8_1.7, bind-export-devel-32:9.11.4-26.P2.el8_1.7, bind-export-libs-32:9.11.4-26.P2.el8_1.7
  • RHSA-2023:4102 Released 2023-07-17 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 8) bind-32:9.11.36-8.el8_8.1, bind-chroot-32:9.11.36-8.el8_8.1, bind-devel-32:9.11.36-8.el8_8.1 +12
    • Red Hat Enterprise Linux BaseOS (v. 8) bind-32:9.11.36-8.el8_8.1, bind-export-devel-32:9.11.36-8.el8_8.1, bind-export-libs-32:9.11.36-8.el8_8.1
  • RHSA-2023:4100 Released 2023-07-17 · Red Hat rating Important
    bind9.16 security update
    • Red Hat Enterprise Linux AppStream (v. 8) bind9.16-32:9.16.23-0.14.el8_8.1, bind9.16-chroot-32:9.16.23-0.14.el8_8.1, bind9.16-dnssec-utils-32:9.16.23-0.14.el8_8.1 +4
    • Red Hat Enterprise Linux CRB (v. 8) bind9.16-devel-32:9.16.23-0.14.el8_8.1, bind9.16-doc-32:9.16.23-0.14.el8_8.1, bind9.16-libs-32:9.16.23-0.14.el8_8.1
  • RHSA-2023:4101 Released 2023-07-17 · Red Hat rating Important
    bind security and bug fix update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) bind-32:9.11.36-3.el8_6.4, bind-chroot-32:9.11.36-3.el8_6.4, bind-devel-32:9.11.36-3.el8_6.4 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bind-32:9.11.36-3.el8_6.4, bind-export-devel-32:9.11.36-3.el8_6.4, bind-export-libs-32:9.11.36-3.el8_6.4
  • RHSA-2023:4099 Released 2023-07-17 · Red Hat rating Important
    bind security update
    • Red Hat Enterprise Linux AppStream (v. 9) bind-32:9.16.23-11.el9_2.1, bind-chroot-32:9.16.23-11.el9_2.1, bind-dnssec-doc-32:9.16.23-11.el9_2.1 +5
    • Red Hat Enterprise Linux CRB (v. 9) bind-devel-32:9.16.23-11.el9_2.1, bind-doc-32:9.16.23-11.el9_2.1, bind-libs-32:9.16.23-11.el9_2.1
  • RHSA-2023:4037 Released 2023-07-12 · Red Hat rating Important
    bind9.16 security update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) bind9.16-devel-32:9.16.23-0.7.el8_6.2, bind9.16-dnssec-utils-32:9.16.23-0.7.el8_6.2, bind9.16-doc-32:9.16.23-0.7.el8_6.2 +2
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.2, bind9.16-chroot-32:9.16.23-0.7.el8_6.2, bind9.16-libs-32:9.16.23-0.7.el8_6.2 +2
  • RHSA-2023:4005 Released 2023-07-10 · Red Hat rating Important
    bind security update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) bind-devel-32:9.16.23-1.el9_0.2, bind-libs-32:9.16.23-1.el9_0.2
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) bind-32:9.16.23-1.el9_0.2, bind-chroot-32:9.16.23-1.el9_0.2, bind-dnssec-doc-32:9.16.23-1.el9_0.2 +5

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2023:4037
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2023:4005
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:4100, RHSA-2023:4102
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:4099
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2023:4153
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2023:4332
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2023:4154
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2023:4153
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2023:4332
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:4037, RHSA-2023:4101
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:4005
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2023:4153
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2023:4332
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:4102
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2023:4153
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2023:4332
Red Hat Enterprise Linux BaseOS E4S (v. 8.1)Fixed RHSA-2023:4154
Red Hat Enterprise Linux BaseOS E4S (v. 8.2)Fixed RHSA-2023:4153
Red Hat Enterprise Linux BaseOS E4S (v.8.4)Fixed RHSA-2023:4332
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2023:4101
Red Hat Enterprise Linux BaseOS TUS (v. 8.2)Fixed RHSA-2023:4153
Red Hat Enterprise Linux BaseOS TUS (v.8.4)Fixed RHSA-2023:4332
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2023:4100
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2023:4099
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:4152
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:4152
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2023:4152
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:4152
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:4152
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:4152
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:4152
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-2828
  2. 2026-10-03 Alias added: GHSA-v668-ccv8-m5gx

References

Patch 1

Advisory 6

  • 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