PT-2009-2756 · Openssl · Openssl

Published 2009-01-07 · Updated 2018-10-11 · CVE-2009-0051

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions ZXID versions 0.29 and earlier

Description The issue arises from improper checking of the return value from the OpenSSL DSA verify function, allowing remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature.

Recommendations For versions 0.29 and earlier, update to a version that properly checks the return value from the OpenSSL DSA verify function to prevent bypassing of certificate chain validation.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2009-0051

Affected Products

Openssl

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2009-0051 · Security Note
• http://securityfocus.com/archive/1/499827/100/0/threaded · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/47837 · Note
• http://ocert.org/advisories/ocert-2008-016.html · Note