CyberRota Analysis
AI-GeneratedThe vulnerability affects libgit2 versions prior to 1.8.6 and 1.9.5, specifically in the `verify_server_cert` function where an incorrect comparison allows mismatched IP addresses to be accepted. This flaw can be exploited by a network attacker with a CA-trusted certificate to intercept connections to IP-literal HTTPS URLs, posing a risk to applications utilizing libgit2 for Git functionality. Organizations using affected versions should prioritize updating to the fixed releases to mitigate potential interception risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, verify_server_cert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GEN_IPADD branch when comparing an IP-literal host with a certificate IP SubjectAltName. OpenSSL builds reject matching IP addresses and accept mismatched IP addresses, allowing a network attacker with a CA-trusted certificate containing any IP SubjectAltName to intercept libgit2 connections to IP-literal HTTPS URLs. DNS SubjectAltName validation and non-OpenSSL TLS backends are not affected. This issue is fixed in versions 1.8.6 and 1.9.5.