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TI-2011-00264 Aliases CVE-2011-0281GHSA-pm35-jvrf-37g2

The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka…

Priority LOW 30CWE-310Published · Updated

Key facts

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

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (file descriptor exhaustion and daemon hang) via a principal name that triggers use of a backslash escape sequence, as demonstrated by a \n sequence.

Why it matters now

EPSS 0.04202 91st percentileScored 2026-11-07
Fix Fixed Red Hat: 2 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 · 11

CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*5-1.6.3Vulnerablemoos-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_5:1.7.1:*:*:*:*:*:*:*1.7.1Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*1.8Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*1.8.1Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*1.8.2Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*1.8.3Vulnerablemoos-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_5:1.6:*:*:*:*:*:*:* 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
  • cpe:2.3:a:mit:kerberos_5:1.7.1:*:*:*:*:*:*:* Versions 1.7.1 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:* Versions 1.8 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:* Versions 1.8.1 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:* Versions 1.8.2 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:* Versions 1.8.3 Vulnerable ·moos-ivp
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*1.9Vulnerablemoos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:* Versions 1.9 Vulnerable ·moos-ivp

Remediation

Red Hat 2 advisories

  • RHSA-2011:0200 Released 2011-02-08 · Red Hat rating Important
    krb5 security update
    • Red Hat Enterprise Linux Desktop (v. 6) krb5-1.8.2-3.el6_0.4, krb5-libs-1.8.2-3.el6_0.4, krb5-pkinit-openssl-1.8.2-3.el6_0.4 +1
    • Red Hat Enterprise Linux Desktop Optional (v. 6) krb5-1.8.2-3.el6_0.4, krb5-devel-1.8.2-3.el6_0.4, krb5-server-1.8.2-3.el6_0.4 +1
    • Red Hat Enterprise Linux HPC Node (v. 6) krb5-1.8.2-3.el6_0.4, krb5-libs-1.8.2-3.el6_0.4
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) krb5-1.8.2-3.el6_0.4, krb5-devel-1.8.2-3.el6_0.4, krb5-pkinit-openssl-1.8.2-3.el6_0.4 +3
    • Red Hat Enterprise Linux Server (v. 6) krb5-1.8.2-3.el6_0.4, krb5-devel-1.8.2-3.el6_0.4, krb5-devel-1.8.2-3.el6_0.4.ppc +7
    • Red Hat Enterprise Linux Workstation (v. 6) krb5-1.8.2-3.el6_0.4, krb5-devel-1.8.2-3.el6_0.4, krb5-libs-1.8.2-3.el6_0.4 +4
  • RHSA-2011:0199 Released 2011-02-08 · Red Hat rating Important
    krb5 security update
    • Red Hat Enterprise Linux (v. 5.6.z server) krb5-1.6.1-55.el5_6.1, krb5-devel-1.6.1-55.el5_6.1, krb5-devel-1.6.1-55.el5_6.1.i386 +18

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5.6.z server)Fixed RHSA-2011:0199
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2011:0200
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2011:0200
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2011:0200
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2011:0200
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:0200
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2011:0200
Not affected: 1 product
  • Red Hat Enterprise Linux 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-0281
  2. 2026-10-03 Alias added: GHSA-pm35-jvrf-37g2

References

Advisory 10

Other 3

  • 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-2009-03997 Multiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the… 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
See all 32 →

Sources

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