CVE catalog

CVE-2009-0127

m2crypto: CVE-2009-0127

Severity: Low
Published: Jan 15, 2009, 5:30:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.38% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	m2crypto	trixie	`0.42.0-3`	vulnerable
Debian	m2crypto	bookworm	`0.38.0-4`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	m2crypto	source	trixie	`(unfixed)`	unimportant	Not reported	[511515]
Debian	m2crypto	source	bookworm	`(unfixed)`	unimportant	Not reported	[511515]

[Debian bug #511515]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[python3-m2crypto]Affected
Source package: [m2crypto]
Details (2)
- 0.38.0-4+b1 · amd64 · bookworm
  Affected
  dsa · m2crypto · debian · bookworm; dsa · m2crypto · debian · 12
- 0.38.0-4+b1 · arm64 · bookworm
  Affected
  dsa · m2crypto · debian · bookworm; dsa · m2crypto · debian · 12
[python-m2crypto-doc]Affected
Source package: [m2crypto]
Details (2)
- 0.38.0-4 · all · bookworm
  Affected
  dsa · m2crypto · debian · bookworm; dsa · m2crypto · debian · 12
- 0.38.0-4 · all · bookworm
  Affected
  dsa · m2crypto · debian · bookworm; dsa · m2crypto · debian · 12

[Debian 13 (Trixie)]

[python3-m2crypto]Affected
Source package: [m2crypto]
Details (2)
- 0.42.0-3 · amd64 · trixie
  Affected
  dsa · m2crypto · debian · 13
- 0.42.0-3 · arm64 · trixie
  Affected
  dsa · m2crypto · debian · 13
[python-m2crypto-doc]Affected
Source package: [m2crypto]
Details (2)
- 0.42.0-3 · all · trixie
  Affected
  dsa · m2crypto · debian · 13
- 0.42.0-3 · all · trixie
  Affected
  dsa · m2crypto · debian · 13

Observed: Oct 23, 2026, 5:04:27 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]