Description
libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c).
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://www.openwall.com/lists/oss-security/2019/12/04/5 ↗
- https://www.openbsd.org/errata66.html ↗
- http://www.openwall.com/lists/oss-security/2019/12/04/6 ↗
- http://www.openwall.com/lists/oss-security/2019/12/04/5 ↗
- https://seclists.org/bugtraq/2019/Dec/8 ↗
- http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html ↗
- http://seclists.org/fulldisclosure/2019/Dec/14 ↗