Authentication Bypass in LibreSSL and OpenBSD Products
CVE-2021-46880

9.8CRITICAL

Key Information:

Vendor
OpenBSD
Status
OpenBSD
Libressl
Vendor
CVE Published:
15 April 2023

Summary

An authentication bypass vulnerability exists in LibreSSL and OpenBSD products due to an issue in the x509_verify.c component. This flaw arises because errors related to unverified certificate chains are occasionally ignored, enabling attackers to bypass authentication mechanisms. Users of impacted versions should apply necessary patches to mitigate potential security risks.

References

https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.4...
https://github.com/openbsd/src/commit/3f851282810fa0ab4b9...
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/00...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.