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TI-2009-03997 Aliases CVE-2009-4212GHSA-39cv-j24w-8wvf

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the…

Priority MEDIUM 53CWE-189Published · 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-189 and the CVSS impact.

Summary

Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.

Why it matters now

EPSS 0.07553 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

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 · 21

CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*5-1.6.3Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3:*:*:*:*:*:*:*1.3Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3.1:*:*:*:*:*:*:*1.3.1Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3.2:*:*:*:*:*:*:*1.3.2Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3.3:*:*:*:*:*:*:*1.3.3Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3.4:*:*:*:*:*:*:*1.3.4Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3.5:*:*:*:*:*:*:*1.3.5Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.3.6:*:*:*:*:*:*:*1.3.6Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.4:*:*:*:*:*:*:*1.4Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.4.1:*:*:*:*:*:*:*1.4.1Vulnerablemoos-ivp
  • cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:* Versions 5-1.6.3 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3:*:*:*:*:*:*:* Versions 1.3 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3.2:*:*:*:*:*:*:* Versions 1.3.2 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3.3:*:*:*:*:*:*:* Versions 1.3.3 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3.4:*:*:*:*:*:*:* Versions 1.3.4 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3.5:*:*:*:*:*:*:* Versions 1.3.5 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.3.6:*:*:*:*:*:*:* Versions 1.3.6 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.4:*:*:*:*:*:*:* Versions 1.4 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.4.1:*:*:*:*:*:*:* Versions 1.4.1 Vulnerable ·moos-ivp
Show 11 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos_5:1.4.2:*:*:*:*:*:*:*1.4.2Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.4.3:*:*:*:*:*:*:*1.4.3Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.4.4:*:*:*:*:*:*:*1.4.4Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.5:*:*:*:*:*:*:*1.5Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.5.1:*:*:*:*:*:*:*1.5.1Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.5.2:*:*:*:*:*:*:*1.5.2Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.5.3:*:*:*:*:*:*:*1.5.3Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.6:*:*:*:*:*:*:*1.6Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.6.1:*:*:*:*:*:*:*1.6.1Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.6.2:*:*:*:*:*:*:*1.6.2Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*1.7Vulnerablemoos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.4.2:*:*:*:*:*:*:* Versions 1.4.2 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.4.3:*:*:*:*:*:*:* Versions 1.4.3 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.4.4:*:*:*:*:*:*:* Versions 1.4.4 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.5:*:*:*:*:*:*:* Versions 1.5 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.5.1:*:*:*:*:*:*:* Versions 1.5.1 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.5.2:*:*:*:*:*:*:* Versions 1.5.2 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.5.3:*:*:*:*:*:*:* Versions 1.5.3 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.6:*:*:*:*:*:*:* Versions 1.6 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.6.1:*:*:*:*:*:*:* Versions 1.6.1 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.6.2:*:*:*:*:*:*:* Versions 1.6.2 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:* Versions 1.7 Vulnerable ·moos-ivp

Remediation

Red Hat 1 advisory

  • RHSA-2010:0029 Released 2010-01-12 · Red Hat rating Critical
    krb5 security update
    • Red Hat Desktop version 3 krb5-1.2.7-71, krb5-devel-1.2.7-71, krb5-devel-1.2.7-71.i386 +6
    • Red Hat Enterprise Linux (v. 5 server) krb5-1.6.1-36.el5_4.1, krb5-devel-1.6.1-36.el5_4.1, krb5-devel-1.6.1-36.el5_4.1.i386 +14
    • Red Hat Enterprise Linux AS EUS (v. 4.7) krb5-1.3.4-60.el4_7.3, krb5-devel-1.3.4-60.el4_7.3, krb5-devel-1.3.4-60.el4_7.3.i386 +14
    • Red Hat Enterprise Linux AS version 3 krb5-1.2.7-71, krb5-devel-1.2.7-71, krb5-devel-1.2.7-71.i386 +14
    • Red Hat Enterprise Linux AS version 4 krb5-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1.i386 +14
    • Red Hat Enterprise Linux Desktop (v. 5 client) krb5-1.6.1-36.el5_4.1, krb5-libs-1.6.1-36.el5_4.1, krb5-libs-1.6.1-36.el5_4.1.i386 +2
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5-1.6.1-36.el5_4.1, krb5-devel-1.6.1-36.el5_4.1, krb5-devel-1.6.1-36.el5_4.1.i386 +2
    • Red Hat Enterprise Linux Desktop version 4 krb5-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1.i386 +6
    • Red Hat Enterprise Linux ES EUS (v. 4.7) krb5-1.3.4-60.el4_7.3, krb5-devel-1.3.4-60.el4_7.3, krb5-devel-1.3.4-60.el4_7.3.i386 +10
    • Red Hat Enterprise Linux ES version 3 krb5-1.2.7-71, krb5-devel-1.2.7-71, krb5-devel-1.2.7-71.i386 +10
    • Red Hat Enterprise Linux ES version 4 krb5-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1.i386 +10
    • Red Hat Enterprise Linux EUS (v. 5.2 server) krb5-1.6.1-25.el5_2.3, krb5-devel-1.6.1-25.el5_2.3, krb5-devel-1.6.1-25.el5_2.3.i386 +14
    • Red Hat Enterprise Linux EUS (v. 5.3 server) krb5-1.6.1-31.el5_3.4, krb5-devel-1.6.1-31.el5_3.4, krb5-devel-1.6.1-31.el5_3.4.i386 +14
    • Red Hat Enterprise Linux WS version 3 krb5-1.2.7-71, krb5-devel-1.2.7-71, krb5-devel-1.2.7-71.i386 +10
    • Red Hat Enterprise Linux WS version 4 krb5-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1, krb5-devel-1.3.4-62.el4_8.1.i386 +10

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Desktop version 3Fixed RHSA-2010:0029
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2010:0029
Red Hat Enterprise Linux AS EUS (v. 4.7)Fixed RHSA-2010:0029
Red Hat Enterprise Linux AS version 3Fixed RHSA-2010:0029
Red Hat Enterprise Linux AS version 4Fixed RHSA-2010:0029
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2010:0029
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2010:0029
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2010:0029
Red Hat Enterprise Linux ES EUS (v. 4.7)Fixed RHSA-2010:0029
Red Hat Enterprise Linux ES version 3Fixed RHSA-2010:0029
Red Hat Enterprise Linux ES version 4Fixed RHSA-2010:0029
Red Hat Enterprise Linux EUS (v. 5.2 server)Fixed RHSA-2010:0029
Red Hat Enterprise Linux EUS (v. 5.3 server)Fixed RHSA-2010:0029
Red Hat Enterprise Linux WS version 3Fixed RHSA-2010:0029
Red Hat Enterprise Linux WS version 4Fixed RHSA-2010:0029

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-4212
  2. 2026-10-03 Alias added: GHSA-39cv-j24w-8wvf

References

Patch 2

Advisory 11

Other 8

  • TI-2001-00539 Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows… CVSS 2.0HIGH 10.0
  • TI-2000-00389 Buffer overflow in krb_rd_req function in Kerberos 4 and 5 allows remote attackers to gain root privileges. CVSS 2.0HIGH 10.0
  • TI-2004-00472 Multiple buffer overflows in krb5_aname_to_localname for MIT Kerberos 5 (krb5) 1.3.3 and… CVSS 2.0HIGH 10.0
  • TI-2000-00391 Buffer overflow in krshd in Kerberos 5 allows remote attackers to gain root privileges. CVSS 2.0HIGH 10.0
  • TI-2000-00390 Buffer overflow in krb425_conv_principal function in Kerberos 5 allows remote attackers to gain root privileges. CVSS 2.0HIGH 10.0
  • TI-2003-00134 Certain weaknesses in the implementation of version 4 of the Kerberos protocol (krb4) in… CVSS 2.0HIGH 7.5
See all 32 →

Sources

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