CVE-2009-0127: n/a vulnerability

CVE-2009-0127: M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verif...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 21:03 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2009-0127 concerns a reported certificate-validation weakness in M2Crypto. If applicable, malformed SSL/TLS signatures might bypass certificate-chain validation. The record also notes a Linux vendor disputed relevance because the named OpenSSL verification functions were reportedly not used in M2Crypto. Exposure is unclear. Potentially relevant systems would be legacy applications using M2Crypto for SSL/TLS certificate validation. The CVE lists no concrete affected versions, products, or CPEs, and includes a vendor dispute about applicability. Treat this as a legacy dependency verification item, not an emergency based on current evidence. Business urgency rises if critical systems still use M2Crypto for certificate validation and lack vendor-supported packages. Mitigation focus: Inventory applications and services that still depend on M2Crypto.; Check Red Hat, Debian, and M2Crypto guidance for package-specific status.; Prefer supported, maintained M2Crypto or TLS library versions..

Prepared: Jun 28, 2026, 11:41 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 15, 2009, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=479676CVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

No CWE listed

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