CVE-2013-1415

05.03.2013, 05:05

The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 and 1.11.x before 1.11.1 does not properly handle errors during extraction of fields from an X.509 certificate, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed KRB5_PADATA_PK_AS_REQ AS-REQ request.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Vector
NIST	NIST	5 UNKNOWN	NETWORK	LOW	AV:N/AC:L/Au:N/C:N/I:N/A:P
mitre	CNA	---			---
CVE	ADP	---			---

Base Score

CVSS 3.x

EPSS Score

Percentile: 71%

Vendor	Product	Version
mit	kerberos_5	𝑥 < 1.10.4
mit	kerberos_5	1.11
opensuse	opensuse	11.4

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

krb5

bullseye (security)	1.18.3-6+deb11u5 fixed
bullseye	1.18.3-6+deb11u5 fixed
squeeze	no-dsa
bookworm	1.20.1-2+deb12u2 fixed
bookworm (security)	1.20.1-2+deb12u2 fixed
sid	1.21.3-3 fixed
trixie	1.21.3-3 fixed

Ubuntu Releases

Ubuntu Product

Codename

krb5

trusty	not-affected
saucy	not-affected
raring	not-affected
quantal	ignored
precise	Fixed 1.10+dfsg~beta1-2ubuntu0.5 released
oneiric	ignored
lucid	Fixed 1.8.1+dfsg-2ubuntu0.13 released
hardy	ignored

Common Weakness Enumeration

CWE-476 - NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

References

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7570

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7577

http://lists.opensuse.org/opensuse-updates/2013-03/msg00090.html

http://secunia.com/advisories/55040

http://web.mit.edu/kerberos/www/krb5-1.10/

http://web.mit.edu/kerberos/www/krb5-1.11/

http://www.mandriva.com/security/advisories?name=MDVSA-2013:157

https://github.com/krb5/krb5/commit/f249555301940c6df3a2cdda13b56b5674eebc2e