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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2019-19726 Detail

Description

OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
http://seclists.org/fulldisclosure/2019/Dec/31 Exploit  Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2019/Dec/31 Exploit  Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2023/Oct/11
http://seclists.org/fulldisclosure/2023/Oct/11
http://www.openwall.com/lists/oss-security/2023/10/03/2
http://www.openwall.com/lists/oss-security/2023/10/03/2
https://seclists.org/bugtraq/2019/Dec/25 Exploit  Mailing List  Third Party Advisory 
https://seclists.org/bugtraq/2019/Dec/25 Exploit  Mailing List  Third Party Advisory 
https://www.openbsd.org/errata66.html Patch  Vendor Advisory 
https://www.openbsd.org/errata66.html Patch  Vendor Advisory 
https://www.openwall.com/lists/oss-security/2019/12/11/9 Mailing List  Third Party Advisory 
https://www.openwall.com/lists/oss-security/2019/12/11/9 Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-269 Improper Privilege Management cwe source acceptance level NIST  

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-19726
NVD Published Date:
12/11/2019
NVD Last Modified:
11/20/2024
Source:
MITRE