CVE-2009-0127 Security feature bypass in n/a
Remote attackers can bypass SSL/TLS certificate validation via malformed signatures due to unchecked return values in M2Crypto verification functions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-0127?
CVE-2009-0127 is a medium-severity vulnerability in n/a, published on 15 Jan 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2009-0127?
It affects 1 product.
Products include Heikkitoivonen M2crypto.
How do I fix CVE-2009-0127?
No fix has been published for CVE-2009-0127 yet. Limit exposure of the affected software until one is available.
Is CVE-2009-0127 being exploited?
There is no known exploitation of CVE-2009-0127 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2009-0127, GHSA-933f-4fwg-646j.