CVE-2009-0127

Name: CVE-2009-0127
Creator: NVD / NIST
Published: 2009-01-15T17:30:00.577+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.38%

Last modified Jun 16, 2026

CVE-2009-0127 is a vulnerability of currently unknown severity. M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verify, DSA_do_verify, and ECDSA_do_verify functions, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a Linux vendor disputes the relevance of this report to the M2Crypto product because "these functions are not used anywhere in m2crypto.. EPSS estimates a 1.38% chance of exploitation in the next 30 days.

Description

M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verify, DSA_do_verify, and ECDSA_do_verify functions, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a Linux vendor disputes the relevance of this report to the M2Crypto product because "these functions are not used anywhere in m2crypto.

Metrics

EPSS Probability

1.38%

68.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Heikkitoivonen	M2crypto	All versions

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515Third Party Advisory
http://openwall.com/lists/oss-security/2009/01/12/4Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=479676Exploit, Issue Tracking
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515Third Party Advisory
http://openwall.com/lists/oss-security/2009/01/12/4Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=479676Exploit, Issue Tracking

Timeline

Published: Jan 15, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0127?

How severe is CVE-2009-0127?

Severity scoring for CVE-2009-0127 is pending analysis. The EPSS model estimates a 1.38% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0127?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0127?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST