SB2017071011 - Fedora 25 update for irssi
Published: July 10, 2017 Updated: April 24, 2025
Security Bulletin ID
SB2017071011
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) NULL pointer dereference (CVE-ID: CVE-2017-10965)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.The vulnerability exists due to NULL pointer dereference error when parsing messages with invalid time stamps in Irssi. A remote attacker can send a specially crafted message and crash the affected server.
2) Use-after-free (CVE-ID: CVE-2017-10966)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to use-after-free error when incorrectly using GHashTable interface while updating internal nick list. A remote unauthenticated attacker can create a specially crafted nick name and crash the affected server or execute arbitrary code.
Successful exploitation of the vulnerability may result in remote code execution.
Remediation
Install update from vendor's website.