SB2020123101 - Path traversal in Docker Docker
Published: December 31, 2020 Updated: November 14, 2023
Security Bulletin ID
SB2020123101
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Path traversal (CVE-ID: CVE-2020-27534)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to util/binfmt_misc/check.go calls os.OpenFile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.TempDir call. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Remediation
Install update from vendor's website.