SB2018030514 - Use-after-free in tor.eff Tor
Published: March 5, 2018 Updated: July 17, 2020
Security Bulletin ID
SB2018030514
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2018-0491)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10. It allows remote attackers to cause a denial of service (relay crash) because the KIST implementation allows a channel to be added more than once in the pending list.
Remediation
Install update from vendor's website.