CVE-2009-0127

Name	CVE-2009-0127
Description	DISPUTED 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."
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium (attack range: remote)
Debian Bugs	511515

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
m2crypto (PTS)	jessie	0.21.1-3	vulnerable
	stretch	0.24.0-1.1	vulnerable
	buster, sid	0.27.0-6	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
m2crypto	source	(unstable)	(unfixed)	unimportant		511515

Notes

m2crypto provides a direct mapping of the OpenSSL functions, no incorrect
call sites are known, if such are found they should be fixed in the respective
applications