Bug 1459456 (CVE-2017-9468) - CVE-2017-9468 irssi: Null pointer dereference while receiving a DCC message without source nick/host
Summary: CVE-2017-9468 irssi: Null pointer dereference while receiving a DCC message w...
Alias: CVE-2017-9468
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1459458
Blocks: 1459459
TreeView+ depends on / blocked
Reported: 2017-06-07 08:20 UTC by Andrej Nemec
Modified: 2021-02-17 02:03 UTC (History)
4 users (show)

Fixed In Version: irssi 1.0.3
Doc Type: If docs needed, set a value
Doc Text:
A null pointer dereference was found in the way irssi handles DCC messages that do not contain a source nick/host. A malicious IRC server could be used to crash an irssi client by sending a specially crafted DCC message.
Clone Of:
Last Closed: 2017-06-12 08:11:37 UTC

Attachments (Terms of Use)

Description Andrej Nemec 2017-06-07 08:20:15 UTC
When receiving a DCC message without source nick/host, Irssi would attempt to dereference a NULL pointer. A malicious remote server could cause irssi to crash.

External References:


Comment 1 Andrej Nemec 2017-06-07 08:24:53 UTC
Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1459458]

Comment 2 Cedric Buissart 2017-06-12 08:04:43 UTC
Lowering severity because of the following reason :
* A rogue, or buggy, IRC server is required to be able to make use of this vulnerability. An attacker would need to either gain control of a IRC server, or trick the user into connecting a rogue IRC server

Comment 3 Cedric Buissart 2017-06-12 08:11:08 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/.

Note You need to log in before you can comment on or make changes to this bug.