Bug 1410821 (CVE-2017-5193) - CVE-2017-5193 irssi: Null pointer dereference in the nickcmp function
Summary: CVE-2017-5193 irssi: Null pointer dereference in the nickcmp function
Alias: CVE-2017-5193
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1410829 1410830
Blocks: 1410833
TreeView+ depends on / blocked
Reported: 2017-01-06 15:11 UTC by Andrej Nemec
Modified: 2021-02-17 02:48 UTC (History)
4 users (show)

Fixed In Version: irssi 0.8.21, irssi 1.0.0
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2017-02-21 17:19:17 UTC

Attachments (Terms of Use)

Description Andrej Nemec 2017-01-06 15:11:32 UTC
A null pointer dereference vulnerability was found in irssi.

External References:


Upstream patch:


CVE assignment:


Comment 1 Andrej Nemec 2017-01-06 15:19:58 UTC
Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1410829]
Affects: epel-5 [bug 1410830]

Comment 2 Cedric Buissart 2017-02-21 16:42:15 UTC
* A rogue IRC server is required to be able to crash irssi via this vulnerability. An attacker would need to either gain control of a IRC server, or trick the user into connecting a rogue IRC server => Lowering the severity due to access complexity.

* From the upstream patch, only the part concerning src/irc/core/irc-queries.c file refers to this vulnerability.

Comment 4 Cedric Buissart 2017-02-21 17:19:02 UTC

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

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