SB2017110312 - Command execution in Mercurial
Published: November 3, 2017
Security Bulletin ID
SB2017110312
CSH Severity
Low
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) OS command injection (CVE-ID: CVE-2017-17458)
CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The weakness exists due to cross repositories modification. A remote attacker can send a specially crafted mercurial repository and trigger arbitrary commands on a client during commands such as clone or update.
Remediation
Install update from vendor's website.