CVE-2011-1527
published 2011-10-20CVE-2011-1527: The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote…
PriorityP433high7.8CVSS 2.0
AVNACLAuNCNINAC
EPSS
3.65%
88.2th percentile
The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | krb5 | < krb5 1.10+dfsg~alpha1-1 (bookworm) | krb5 1.10+dfsg~alpha1-1 (bookworm) |
| mit | kerberos_5 | — | — |
| mit | kerberos_5 | — | — |
| mit | krb5 | >= 0 < 1.10+dfsg~alpha1-1 | 1.10+dfsg~alpha1-1 |
| mit | krb5 | >= 0 < 1.10+dfsg~alpha1-1 | 1.10+dfsg~alpha1-1 |
| mit | krb5 | >= 0 < 1.10+dfsg~alpha1-1 | 1.10+dfsg~alpha1-1 |
| mit | krb5 | >= 0 < 1.10+dfsg~alpha1-1 | 1.10+dfsg~alpha1-1 |
CVSS provenance
nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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Ubuntu
Kerberos Vulnerabilities
vendor_ubuntu·2011-10-18·CVSS 7.8
CVE-2011-1527 [HIGH] Kerberos Vulnerabilities
Title: Kerberos Vulnerabilities
Summary: Several denial of service issues were fixed in the Kerberos Key
Distribution Center (KDC).
Nalin Dahyabhai, Andrej Ota and Kyle Moffett discovered a NULL
pointer dereference in the KDC LDAP backend. An unauthenticated
remote attacker could use this to cause a denial of service. This
issue affected Ubuntu 11.10. (CVE-2011-1527)
Mark Deneen discovered that an assert() could be triggered in the
krb5_ldap_lockout_audit() function in the KDC LDAP backend and
the krb5_db2_lockout_audit() function in the KDC DB2 backend. An
unauthenticated remote attacker could use this to cause a denial of
service. (CVE-2011-1528)
It was discovered that a NULL pointer dereference could occur in the
lookup_lockout_policy() function in the KDC LDAP and DB2 backends.
An
Red Hat
krb5: KDC denial of service vulnerabilities (MITKRB5-SA-2011-006)
vendor_redhat·2011-10-18·CVSS 7.8
CVE-2011-1527 [HIGH] krb5: KDC denial of service vulnerabilities (MITKRB5-SA-2011-006)
krb5: KDC denial of service vulnerabilities (MITKRB5-SA-2011-006)
The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.
Package: krb5 (Red Hat Enterprise Linux 4) - Not affected
Package: krb5 (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2011-1527: krb5 - The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka ...
vendor_debian·2011·CVSS 7.8
CVE-2011-1527 [HIGH] CVE-2011-1527: krb5 - The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka ...
The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.
Scope: local
bookworm: resolved (fixed in 1.10+dfsg~alpha1-1)
bullseye: resolved (fixed in 1.10+dfsg~alpha1-1)
forky: resolved (fixed in 1.10+dfsg~alpha1-1)
sid: resolved (fixed in 1.10+dfsg~alpha1-1)
trixie: resolved (fixed in 1.10+dfsg~alpha1-1)
GHSA
GHSA-848m-2rw5-f2f2: The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1
ghsa_unreviewed·2022-05-13
CVE-2011-1527 [HIGH] CWE-20 GHSA-848m-2rw5-f2f2: The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1
The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.
OSV
CVE-2011-1527: The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1
osv·2011-10-20·CVSS 7.8
CVE-2011-1527 [HIGH] CVE-2011-1527: The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1
The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.
No detection rules found.
No public exploits indexed.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629558http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txthttp://www.kb.cert.org/vuls/id/659251http://www.mandriva.com/security/advisories?name=MDVSA-2011:159http://www.redhat.com/support/errata/RHSA-2011-1379.htmlhttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629558http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txthttp://www.kb.cert.org/vuls/id/659251http://www.mandriva.com/security/advisories?name=MDVSA-2011:159http://www.redhat.com/support/errata/RHSA-2011-1379.html
2011-10-20
Published