CVE-2019-19521
CRITICAL
9.8
CVSS Score
Published: December 4, 2019 at 11:33 PM UTC
Updated: June 17, 2026 at 02:26 AM UTC
1 product affected across 1 vendorOpenBSD
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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%
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).
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (7)
x_refsource_MISCThird Party Advisory
Source: [email protected]
http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.htmlMailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2019/Dec/14Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2019/12/04/5Mailing Listx_refsource_MLIST
Source: [email protected]
http://www.openwall.com/lists/oss-security/2019/12/04/6Mailing Listx_refsource_BUGTRAQExploitThird Party Advisory
Source: [email protected]
https://seclists.org/bugtraq/2019/Dec/8x_refsource_MISCExploitMailing ListThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2019/12/04/5CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
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