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TI-2009-00804 Aliases CVE-2009-0846GHSA-777p-gw55-q56c

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1…

Priority MEDIUM 54CWE-824Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-824 and the CVSS impact.

Summary

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

Why it matters now

EPSS 0.08898 95th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 18

CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*before 1.6.4Vulnerablemoos-ivp
cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:*9VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*10VulnerableFedoraproject
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*6.06VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*7.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:*8.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*8.10VulnerableCanonical
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.5.7VulnerableApple
cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
  • cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* Versions before 1.6.4 Vulnerable ·moos-ivp
  • cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Fedoraproject
  • cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* Versions 6.06 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:* Versions 7.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:* Versions 8.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:* Versions 8.10 Vulnerable ·Canonical
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.5.7 Vulnerable ·Apple
  • cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
Show 8 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:4.7:*:*:*:*:*:*:*4.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:2.0:*:*:*:*:*:*:*2.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:2.0:*:*:*:*:*:*:*2.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:4.7:*:*:*:*:*:*:* Versions 4.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat

Remediation

Red Hat 3 advisories

  • RHSA-2009:0409 Released 2009-04-07 · Red Hat rating Important
    krb5 security update
    • Red Hat Enterprise Linux AS version 4 krb5-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2.i386 +14
    • Red Hat Enterprise Linux Desktop version 4 krb5-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2.i386 +6
    • Red Hat Enterprise Linux ES version 4 krb5-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2.i386 +10
    • Red Hat Enterprise Linux WS version 4 krb5-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2, krb5-devel-1.3.4-60.el4_7.2.i386 +10
  • RHSA-2009:0410 Released 2009-04-07 · Red Hat rating Critical
    krb5 security update
    • Red Hat Desktop version 3 krb5-1.2.7-70, krb5-devel-1.2.7-70, krb5-devel-1.2.7-70.i386 +6
    • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 krb5-1.2.2-49, krb5-devel-1.2.2-49.i386, krb5-devel-1.2.2-49.ia64 +6
    • Red Hat Enterprise Linux AS version 3 krb5-1.2.7-70, krb5-devel-1.2.7-70, krb5-devel-1.2.7-70.i386 +14
    • Red Hat Enterprise Linux ES version 2.1 krb5-1.2.2-49, krb5-devel-1.2.2-49.i386, krb5-libs-1.2.2-49.i386 +2
    • Red Hat Enterprise Linux ES version 3 krb5-1.2.7-70, krb5-devel-1.2.7-70, krb5-devel-1.2.7-70.i386 +10
    • Red Hat Enterprise Linux WS version 2.1 krb5-1.2.2-49, krb5-devel-1.2.2-49.i386, krb5-libs-1.2.2-49.i386 +2
    • Red Hat Enterprise Linux WS version 3 krb5-1.2.7-70, krb5-devel-1.2.7-70, krb5-devel-1.2.7-70.i386 +10
    • Red Hat Linux Advanced Workstation 2.1 krb5-1.2.2-49, krb5-devel-1.2.2-49.ia64, krb5-libs-1.2.2-49.ia64 +2
  • RHSA-2009:0408 Released 2009-04-07 · Red Hat rating Important
    krb5 security update
    • Red Hat Enterprise Linux (v. 5 server) krb5-1.6.1-31.el5_3.3, krb5-devel-1.6.1-31.el5_3.3, krb5-devel-1.6.1-31.el5_3.3.i386 +14
    • Red Hat Enterprise Linux Desktop (v. 5 client) krb5-1.6.1-31.el5_3.3, krb5-libs-1.6.1-31.el5_3.3, krb5-libs-1.6.1-31.el5_3.3.i386 +2
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5-1.6.1-31.el5_3.3, krb5-devel-1.6.1-31.el5_3.3, krb5-devel-1.6.1-31.el5_3.3.i386 +2

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2009:0410
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2009:0408
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 Fixed RHSA-2009:0410
Red Hat Enterprise Linux AS version 3Fixed RHSA-2009:0410
Red Hat Enterprise Linux AS version 4Fixed RHSA-2009:0409
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2009:0408
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2009:0408
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2009:0409
Red Hat Enterprise Linux ES version 2.1Fixed RHSA-2009:0410
Red Hat Enterprise Linux ES version 3Fixed RHSA-2009:0410
Red Hat Enterprise Linux ES version 4Fixed RHSA-2009:0409
Red Hat Enterprise Linux WS version 2.1Fixed RHSA-2009:0410
Red Hat Enterprise Linux WS version 3Fixed RHSA-2009:0410
Red Hat Enterprise Linux WS version 4Fixed RHSA-2009:0409
Red Hat Linux Advanced Workstation 2.1Fixed RHSA-2009:0410

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-0846
  2. 2026-10-03 Alias added: GHSA-777p-gw55-q56c

References

Patch 1

Advisory 17

Other 16

Sources

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