CVE-2011-0281

krb5: KDC hang when using LDAP backend caused by special principal name (MITKRB5-SA-2011-002)

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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
sequence.

La implementación unparse en el Key Distribution Center (KDC) de MIT Kerberos v5 (también conocido como krb5) v1.6.x a v1.9, cuando se usa un backend LDAP, permite a atacantes remotos provocar una denegación de servicio (agotamiento de descriptor de archivo y bloqueo del demonio) a través de un nombre principal que desencadena el uso de una secuencia de escape barra diagonal inversa, como se demuestra por una secuencia de
.

*Credits: N/A

CVSS Scores

NISTv2 5.0

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-01-03 CVE Reserved
2011-02-09 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-310: Cryptographic Issues

CAPEC

References (24)

URL	Tag	Source
http://mailman.mit.edu/pipermail/kerberos/2010-December/016800.html	Mailing List
http://secunia.com/advisories/46397	Third Party Advisory
http://securityreason.com/securityalert/8073	Third Party Advisory
http://www.securityfocus.com/archive/1/516299/100/0/threaded	Mailing List
http://www.securityfocus.com/archive/1/520102/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/46265	Vdb Entry
http://www.securitytracker.com/id?1025037	Vdb Entry
http://www.vmware.com/security/advisories/VMSA-2011-0012.html	X_refsource_confirm
http://www.vupen.com/english/advisories/2011/0464	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/65324	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00004.html	2020-01-21
http://secunia.com/advisories/43260	2020-01-21
http://secunia.com/advisories/43273	2020-01-21
http://secunia.com/advisories/43275	2020-01-21
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt	2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2011:024	2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2011:025	2020-01-21
http://www.redhat.com/support/errata/RHSA-2011-0199.html	2020-01-21
http://www.redhat.com/support/errata/RHSA-2011-0200.html	2020-01-21
http://www.vupen.com/english/advisories/2011/0330	2020-01-21
http://www.vupen.com/english/advisories/2011/0333	2020-01-21
http://www.vupen.com/english/advisories/2011/0347	2020-01-21
https://access.redhat.com/security/cve/CVE-2011-0281	2011-02-08
https://bugzilla.redhat.com/show_bug.cgi?id=668719	2011-02-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mit Search vendor "Mit"		Kerberos Search vendor "Mit" for product "Kerberos"				5-1.6.3 Search vendor "Mit" for product "Kerberos" and version "5-1.6.3"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.6 Search vendor "Mit" for product "Kerberos 5" and version "1.6"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.6.1 Search vendor "Mit" for product "Kerberos 5" and version "1.6.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.6.2 Search vendor "Mit" for product "Kerberos 5" and version "1.6.2"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.7 Search vendor "Mit" for product "Kerberos 5" and version "1.7"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.7.1 Search vendor "Mit" for product "Kerberos 5" and version "1.7.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8 Search vendor "Mit" for product "Kerberos 5" and version "1.8"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.1 Search vendor "Mit" for product "Kerberos 5" and version "1.8.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.2 Search vendor "Mit" for product "Kerberos 5" and version "1.8.2"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.3 Search vendor "Mit" for product "Kerberos 5" and version "1.8.3"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.9 Search vendor "Mit" for product "Kerberos 5" and version "1.9"		-		Affected