CVE-2009-0127

Public Exploit

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.08%
Third-Party Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=479676 issue tracking exploit
http://openwall.com/lists/oss-security/2009/01/12/4 mailing list
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515 third party advisory

Frequently Asked Questions

What is the severity of CVE-2009-0127?
CVE-2009-0127 has been scored as a medium severity vulnerability.
How to fix CVE-2009-0127?
To fix CVE-2009-0127, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0127 being actively exploited in the wild?
It is possible that CVE-2009-0127 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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