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Microsoft Windows: An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously

Microsoft Windows · CVE-2023-27536
0 news outlets0 CERTs and agencies0 researchers

What is it?

An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
5.9
EPSS
1.8%
First seen
9 h ago
Status
corroborated

All Microsoft vulnerabilities