CVE-2013-1416

krb5: NULL pointer dereference (DoS, KDC crash) by processing certain TGS requests

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.

La función prep_reprocess_req en do_tgs_req.c en el Key Distribution Center (KDC) en MIT Kerberos 5 (aka krb5) antes de v1.10.5 no realiza correctamente el servicio ámbito de referencia principal, lo que permite a usuarios remotos autenticados causar una denegación de servicio (desreferencia a un puntero nulo y la caída del demonio) a través de una solicitud TGS-REQ modificada.

It was discovered that Kerberos incorrectly handled certain crafted Draft 9 requests. A remote attacker could use this issue to cause the daemon to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS. It was discovered that Kerberos incorrectly handled certain malformed KRB5_PADATA_PK_AS_REQ AS-REQ requests. A remote attacker could use this issue to cause the daemon to crash, resulting in a denial of service. This issue only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-01-24 CVE Reserved
2013-04-19 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (12)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/krb5/krb5/commit/8ee70ec63931d1e38567905387ab9b1d45734d81	2021-02-02

URL	Date	SRC
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7600	2021-02-02
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102058.html	2021-02-02
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102074.html	2021-02-02
http://lists.opensuse.org/opensuse-updates/2013-05/msg00011.html	2021-02-02
http://lists.opensuse.org/opensuse-updates/2013-06/msg00041.html	2021-02-02
http://lists.opensuse.org/opensuse-updates/2013-06/msg00102.html	2021-02-02
http://rhn.redhat.com/errata/RHSA-2013-0748.html	2021-02-02
http://www.mandriva.com/security/advisories?name=MDVSA-2013:157	2021-02-02
http://www.mandriva.com/security/advisories?name=MDVSA-2013:158	2021-02-02
https://access.redhat.com/security/cve/CVE-2013-1416	2013-04-16
https://bugzilla.redhat.com/show_bug.cgi?id=949984	2013-04-16

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 5 Search vendor "Mit" for product "Kerberos 5"				< 1.10.5 Search vendor "Mit" for product "Kerberos 5" and version " < 1.10.5"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				11.4 Search vendor "Opensuse" for product "Opensuse" and version "11.4"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.1 Search vendor "Opensuse" for product "Opensuse" and version "12.1"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.2 Search vendor "Opensuse" for product "Opensuse" and version "12.2"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.3 Search vendor "Opensuse" for product "Opensuse" and version "12.3"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				17 Search vendor "Fedoraproject" for product "Fedora" and version "17"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				18 Search vendor "Fedoraproject" for product "Fedora" and version "18"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				6.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "6.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				6.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "6.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected