SB2018020301 - Input validation error in Debian Linux
Published: February 3, 2018 Updated: August 8, 2020
Security Bulletin ID
SB2018020301
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2017-18123)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The call parameter of /lib/exe/ajax.php in DokuWiki through 2017-02-19e does not properly encode user input, which leads to a reflected file download vulnerability, and allows remote attackers to run arbitrary programs.
Remediation
Install update from vendor's website.
References
- https://github.com/splitbrain/dokuwiki/commit/238b8e878ad48f370903465192b57c2072f65d86
- https://github.com/splitbrain/dokuwiki/issues/2029
- https://github.com/splitbrain/dokuwiki/pull/2019
- https://hackerone.com/reports/238316
- https://lists.debian.org/debian-lts-announce/2018/02/msg00004.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00004.html
- https://vulnhive.com/2018/000004