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).
References
Link | Resource |
---|---|
http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html | Third Party Advisory |
http://seclists.org/fulldisclosure/2019/Dec/14 | Third Party Advisory |
http://www.openwall.com/lists/oss-security/2019/12/04/5 | Exploit Mailing List Third Party Advisory |
http://www.openwall.com/lists/oss-security/2019/12/04/6 | Mailing List |
https://seclists.org/bugtraq/2019/Dec/8 | Exploit Mailing List Third Party Advisory |
https://www.openbsd.org/errata66.html | Vendor Advisory |
https://www.openwall.com/lists/oss-security/2019/12/04/5 | Exploit Mailing List Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2019-12-04T23:33:35
Updated: 2019-12-06T21:06:07
Reserved: 2019-12-03T00:00:00
Link: CVE-2019-19521
JSON object: View
NVD Information
Status : Analyzed
Published: 2019-12-05T00:15:11.400
Modified: 2019-12-12T15:55:07.857
Link: CVE-2019-19521
JSON object: View
Redhat Information
No data.
CWE