PT-2005-2888 · Microsoft · Asn.1 Library

Published 2005-06-09 · Updated 2017-07-11 · CVE-2005-1935

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Microsoft ASN.1 library (MSASN1.DLL) (affected versions not specified)

Description The issue is related to a heap-based buffer overflow in the BERDecBitString function, allowing remote attackers to execute arbitrary code via nested constructed bit strings. This can lead to the function overwriting previously freed memory. The issue can be demonstrated using a SPNEGO token with a constructed bit string during HTTP authentication.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2005-1935

Affected Products

Asn.1 Library

References · 3

• 🔥 http://phreedom.org/solar/exploits/msasn1-bitstring · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2005-1935 · Security Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/20870 · Note