Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.
- 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