SB20171211328 - Improper Neutralization of Special Elements in Output Used by a Downstream Component in LilyPond
Published: December 11, 2017 Updated: August 8, 2020
Security Bulletin ID
SB20171211328
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 security vulnerability.
1) Improper Neutralization of Special Elements in Output Used by a Downstream Component (CVE-ID: CVE-2017-17523)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
lilypond-invoke-editor in LilyPond 2.19.80 does not validate strings before launching the program specified by the BROWSER environment variable, which allows remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by a --proxy-pac-file argument.
Remediation
Install update from vendor's website.