CVE-2011-0281
The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-0281- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-310
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-0281- Updated
- 2026-11-02
EUVDEUVD-2011-0307 No score
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.
- Record
EUVD-2011-0307- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pm35-jvrf-37g2 No score
The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6...
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.
- Record
GHSA-pm35-jvrf-37g2- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2011-0281- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-0281 No score
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.
- Record
DEBIAN-CVE-2011-0281- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10004-1 No score
krb5-1.15-1.1 on GA media
These are all security issues fixed in the krb5-1.15-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10004-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
krb5Debian:12 |
before 1.8.3+dfsg-5 | 1.8.3+dfsg-5 |
krb5Debian:13 |
before 1.8.3+dfsg-5 | 1.8.3+dfsg-5 |
krb5Debian:14 |
before 1.8.3+dfsg-5 | 1.8.3+dfsg-5 |
krb5Red Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
krb5-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
krb5-develRed Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
krb5-libsRed Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
krb5-serverRed Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
krb5-server-ldapRed Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
krb5-workstationRed Hat:enterprise_linux:5::server From an advisory covering 2 CVEs |
before 0:1.6.1-55.el5_6.1 | 0:1.6.1-55.el5_6.1 |
Show 33 moreShow less
| Package | Affected | Fixed |
|---|---|---|
krb5Red Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-debuginfoRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-develRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-serverRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-server-ldapRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-libsRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-pkinit-opensslRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-workstationRed Hat:enterprise_linux:6::client From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5Red Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-debuginfoRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-develRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-pkinit-opensslRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-serverRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-server-ldapRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-workstationRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-libsRed Hat:enterprise_linux:6::computenode From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5Red Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-develRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-libsRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-pkinit-opensslRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-serverRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-server-ldapRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-workstationRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5Red Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-debuginfoRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-develRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-libsRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-pkinit-opensslRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-serverRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-server-ldapRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5-workstationRed Hat:enterprise_linux:6::workstation From an advisory covering 3 CVEs |
before 0:1.8.2-3.el6_0.4 | 0:1.8.2-3.el6_0.4 |
krb5openSUSE:Tumbleweed From an advisory covering 54 CVEs |
before 1.15-1.1 | 1.15-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-0281 is a medium vulnerability (CVSS 5.0) in Mit Kerberos, published February 10, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.20%, the 91st percentile. Fixed in krb5 1.8.3+dfsg-5.
References
mandriva.com/security/advisories?name=MDVSA-2011:025
securityfocus.com/bid/46265
secunia.com/advisories/46397
vupen.com/english/advisories/2011/0347
Show 90 moreShow less
redhat.com/support/errata/RHSA-2011-0199.html
web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt
securitytracker.com/id?1025037
lists.opensuse.org/opensuse-security-announce/2011-02/msg00004.html
vmware.com/security/advisories/VMSA-2011-0012.html
securityreason.com/securityalert/8073
exchange.xforce.ibmcloud.com/vulnerabilities/65324
mailman.mit.edu/pipermail/kerberos/2010-December/016800.html
nvd.nist.gov/vuln/detail/CVE-2011-0281
github.com/advisories/GHSA-pm35-jvrf-37g2
security-tracker.debian.org/tracker/CVE-2011-0281
access.redhat.com/errata/RHSA-2011:0199
bugzilla.redhat.com/show_bug.cgi?id=668719
security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_0199.json
cve.org/CVERecord?id=CVE-2011-0281
suse.com/security/cve/CVE-2002-2443