Executive Summary

Informations
Name CVE-2019-19726 First vendor Publication 2019-12-12
Vendor Cve Last vendor Modification 2023-10-06

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19726

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-269 Improper Privilege Management

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 40

Metasploit Database

id Description
2019-12-11 OpenBSD Dynamic Loader chpass Privilege Escalation

Sources (Detail)

Source Url
BUGTRAQ https://seclists.org/bugtraq/2019/Dec/25
CONFIRM https://www.openbsd.org/errata66.html
FULLDISC http://seclists.org/fulldisclosure/2019/Dec/31
http://seclists.org/fulldisclosure/2023/Oct/11
MISC http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-...
http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Pri...
http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escal...
https://www.openwall.com/lists/oss-security/2019/12/11/9
MLIST http://www.openwall.com/lists/oss-security/2023/10/03/2

Alert History

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Date Informations
2023-10-07 02:32:25
  • Multiple Updates
2023-10-07 01:54:15
  • Multiple Updates
2023-10-06 21:27:59
  • Multiple Updates
2023-10-06 12:54:06
  • Multiple Updates
2023-10-04 00:27:44
  • Multiple Updates
2023-01-31 00:27:52
  • Multiple Updates
2021-06-26 01:31:44
  • Multiple Updates
2021-05-04 13:33:47
  • Multiple Updates
2021-04-22 02:47:26
  • Multiple Updates
2020-05-23 13:17:11
  • Multiple Updates
2020-05-23 02:28:47
  • First insertion