Bug 1510958 (CVE-2017-15723)

Summary: CVE-2017-15723 irssi: NULL pointer dereference due to overlong nicks while splitting the message
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: huzaifas, jskarvad, mmahut
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: irssi 1.0.5 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-12-14 10:01:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1510963    
Bug Blocks: 1510960    

Description Andrej Nemec 2017-11-08 13:30:00 UTC
In Irssi before 1.0.5, overlong nicks or targets may result in a NULL pointer dereference while splitting the message. This may result in a remote denial of service.

External References:

https://irssi.org/security/irssi_sa_2017_10.txt

Comment 1 Andrej Nemec 2017-11-08 13:32:33 UTC
Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1510963]

Comment 2 Stefan Cornelius 2017-12-14 10:01:13 UTC
As far as I can tell, this was introduced sometime around version 0.8.17-rc2. The versions we ship are older.

Comment 3 Stefan Cornelius 2017-12-14 10:01:20 UTC
Statement:

This issue did not affect the versions of irssi as shipped with Red Hat Enterprise Linux 6 and 7.