SB2018020513 - Man-in-the-middle attack in Git
Published: February 5, 2018 Updated: December 28, 2020
Security Bulletin ID
SB2018020513
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) Man-in-the-middle attack (CVE-ID: CVE-2018-1000021)
CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')
CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote unauthenticated attacker to execute arbitrary code on the target system.
The weakness exists due to insufficient validation of messages received from a Git server, which could include ANSI escape codes to the terminal on affected Git clients. A remote attacker can trick the victim into sending a request and interact with a malicious Git server and execute arbitrary code.
Remediation
Install update from vendor's website.