National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-19521 Detail

Current 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).

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink 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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-287 Improper Authentication NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:openbsd:openbsd:6.6:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-19521
NVD Published Date:
12/04/2019
NVD Last Modified:
12/12/2019