SB2017102206 - Use-after-free in Irssi
Published: October 22, 2017 Updated: July 28, 2020
Security Bulletin ID
SB2017102206
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-2017-15227)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Irssi before 1.0.5, while waiting for the channel synchronisation, may incorrectly fail to remove destroyed channels from the query list, resulting in use-after-free conditions when updating the state later on.
Remediation
Install update from vendor's website.