SB2017100520 - Multiple vulnerabilities in Mercurial
Published: October 5, 2017 Updated: July 23, 2020
Security Bulletin ID
SB2017100520
Severity
High
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Link following (CVE-ID: CVE-2017-1000115)
The vulnerability allows a remote non-authenticated attacker to manipulate data.
Mercurial prior to version 4.3 is vulnerable to a missing symlink check that can malicious repositories to modify files outside the repository
2) OS Command Injection (CVE-ID: CVE-2017-1000116)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Mercurial prior to 4.3 did not adequately sanitize hostnames passed to ssh, leading to possible shell-injection attacks.
Remediation
Install update from vendor's website.