National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-0050 Detail

Current Description

Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

Source:  MITRE      Last Modified:  01/07/2009      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2009-0050
Original release date:
01/07/2009
Last revised:
08/07/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.ocert.org/advisories/ocert-2008-016.html External Source MISC http://www.ocert.org/advisories/ocert-2008-016.html
http://www.securityfocus.com/archive/1/archive/1/499827/100/0/threaded External Source BUGTRAQ 20090107 [oCERT-2008-016] Multiple OpenSSL signature verification API misuses
https://exchange.xforce.ibmcloud.com/vulnerabilities/47837 External Source XF openssl-dsa-verify-security-bypass(47837)

Technical Details

Vulnerability Type (View All)

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