4896 : MIT Kerberos 5 ASN.1 Decoder Heap Corruption DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
9	1330	about 9 years ago	about 5 years ago	1 times	90%

Timeline

Disclosure Date
2003-01-28

Description

A remote overflow exists in MIT Kerberos 5. The ASN.1 decoder fails to properly sanitize user suplied input resulting in heap corruption. If an attacker sends a specially crafted packet with a negative length value, they may cause the services to crash resulting in a loss of availability.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Unknown

Solution

Upgrade to version 1.2.5 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

MIT	Kerberos 5	1.1.1
		1.2
		1.2.1
		1.2.2
		1.2.3
		1.2.4

References

ISS X-Force ID: 11190
CVE ID: 2002-0036 (see also: NVD)
CERT VU: 587579
Bugtraq ID: 6713
Vendor Specific Advisory URL: http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000639
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-001-multiple.txt
http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:043
Vendor URL: http://web.mit.edu/kerberos/www/
Keyword: MIT krb5 Security Advisory 2003-001
CIAC Advisory: n-037
RedHat RHSA: RHSA-2003-051 RHSA-2003-052

Tools & Filters

	11512 12364 14027
	1162 1164

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

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