Out-of-bounds read in Irssi - CVE-2017-5356
Published: March 3, 2017 / Updated: July 18, 2020
Vulnerability identifier: #VU31442
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-5356
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Irssi
Irssi
Software vendor:
Irssi.org
Irssi.org
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Irssi before 0.8.21 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a string containing a formatting sequence (%[) without a closing bracket (]).
Remediation
Install update from vendor's website.
External links
- http://www.openwall.com/lists/oss-security/2017/01/12/8
- http://www.openwall.com/lists/oss-security/2017/01/13/2
- http://www.securityfocus.com/bid/96581
- https://blog.fuzzing-project.org/55-Fuzzing-Irssi-with-Perl-Scripts.html
- https://irssi.org/security/irssi_sa_2017_01.txt
- https://lists.debian.org/debian-lts-announce/2017/12/msg00022.html