SB2019071904 - OpenSUSE Linux update for libqb

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Main Vulnerability Database SB2019071904

SB2019071904 - OpenSUSE Linux update for libqb

Published: July 19, 2019

Security Bulletin ID SB2019071904
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) UNIX symbolic link following (CVE-ID: CVE-2019-12779)

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a symlink following issue because software uses predictable filenames (under /dev/shm and /tmp) without O_EXCL in libqb before 1.0.5. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Successful exploitation of this vulnerability may result in privilege escalation.


Remediation

Install update from vendor's website.

References