CVE-2018-5206
published 2018-01-06CVE-2018-5206: When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
PriorityP337critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
2.16%
80.1th percentile
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | irssi | < irssi 1.0.7-1 (bookworm) | irssi 1.0.7-1 (bookworm) |
| irssi | irssi | < 1.0.6 | 1.0.6 |
| irssi | irssi | >= 0 < 1.0.7-1 | 1.0.7-1 |
| irssi | irssi | >= 0 < 1.0.7-1 | 1.0.7-1 |
| irssi | irssi | >= 0 < 1.0.7-1 | 1.0.7-1 |
| irssi | irssi | >= 0 < 1.0.7-1 | 1.0.7-1 |
| irssi | irssi | >= 0 < 0.8.15-5ubuntu3.4 | 0.8.15-5ubuntu3.4 |
| irssi | irssi | >= 0 < 0.8.19-1ubuntu1.6 | 0.8.19-1ubuntu1.6 |
CVSS provenance
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
vendor_ubuntu7.5HIGH
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Ubuntu
Irssi vulnerabilities
vendor_ubuntu·2018-01-10·CVSS 7.5
CVE-2018-5205 [HIGH] Irssi vulnerabilities
Title: Irssi vulnerabilities
Summary: Several security issues were fixed in Irssi.
Joseph Bisch discovered that Irssi incorrectly handled incomplete escape
codes. If a user were tricked into using malformed commands or opening
malformed files, an attacker could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2018-5205)
Joseph Bisch discovered that Irssi incorrectly handled settings the channel
topic without specifying a sender. A malicious IRC server could use this
issue to cause Irssi to crash, resulting in a denial of service.
(CVE-2018-5206)
Joseph Bisch discovered that Irssi incorrectly handled incomplete variable
arguments. If a user were tricked into using malformed commands or opening
malformed files, an attacker could use this issue to cause Irssi
Red Hat
irssi: NULL pointer dereference when channel topic is set without specifying sender
vendor_redhat·2018-01-06·CVSS 9.8
CVE-2018-5206 [CRITICAL] CWE-476 irssi: NULL pointer dereference when channel topic is set without specifying sender
irssi: NULL pointer dereference when channel topic is set without specifying sender
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
Package: irssi (Red Hat Enterprise Linux 6) - Will not fix
Package: irssi (Red Hat Enterprise Linux 7) - Will not fix
Package: irssi (Red Hat Enterprise Linux 8) - Not affected
Debian
CVE-2018-5206: irssi - When the channel topic is set without specifying a sender, Irssi before 1.0.6 ma...
vendor_debian·2018·CVSS 9.8
CVE-2018-5206 [CRITICAL] CVE-2018-5206: irssi - When the channel topic is set without specifying a sender, Irssi before 1.0.6 ma...
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
Scope: local
bookworm: resolved (fixed in 1.0.7-1)
bullseye: resolved (fixed in 1.0.7-1)
forky: resolved (fixed in 1.0.7-1)
sid: resolved (fixed in 1.0.7-1)
trixie: resolved (fixed in 1.0.7-1)
GHSA
GHSA-5g28-mmwc-h2cj: When the channel topic is set without specifying a sender, Irssi before 1
ghsa_unreviewed·2022-05-14
CVE-2018-5206 [CRITICAL] CWE-476 GHSA-5g28-mmwc-h2cj: When the channel topic is set without specifying a sender, Irssi before 1
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
OSV
irssi vulnerabilities
osv·2018-01-10·CVSS 7.5
CVE-2018-5205 [HIGH] irssi vulnerabilities
irssi vulnerabilities
Joseph Bisch discovered that Irssi incorrectly handled incomplete escape
codes. If a user were tricked into using malformed commands or opening
malformed files, an attacker could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2018-5205)
Joseph Bisch discovered that Irssi incorrectly handled settings the channel
topic without specifying a sender. A malicious IRC server could use this
issue to cause Irssi to crash, resulting in a denial of service.
(CVE-2018-5206)
Joseph Bisch discovered that Irssi incorrectly handled incomplete variable
arguments. If a user were tricked into using malformed commands or opening
malformed files, an attacker could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2018-5207)
OSV
CVE-2018-5206: When the channel topic is set without specifying a sender, Irssi before 1
osv·2018-01-06·CVSS 9.8
CVE-2018-5206 [CRITICAL] CVE-2018-5206: When the channel topic is set without specifying a sender, Irssi before 1
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-5205 CVE-2018-5206 CVE-2018-5207 CVE-2018-5208 irssi: various flaws [fedora-all]
bugzilla·2018-01-09·CVSS 7.5
CVE-2018-5205 [HIGH] CVE-2018-5205 CVE-2018-5206 CVE-2018-5207 CVE-2018-5208 irssi: various flaws [fedora-all]
CVE-2018-5205 CVE-2018-5206 CVE-2018-5207 CVE-2018-5208 irssi: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple suppor
Bugzilla
CVE-2018-5206 irssi: NULL pointer dereference when channel topic is set without specifying sender
bugzilla·2018-01-09·CVSS 9.8
CVE-2018-5206 [CRITICAL] CVE-2018-5206 irssi: NULL pointer dereference when channel topic is set without specifying sender
CVE-2018-5206 irssi: NULL pointer dereference when channel topic is set without specifying sender
When the channel topic is set without specifying a sender, Irssi may dereference NULL pointer.
The exploitation of the issue requires a broken ircd or control over the ircd.
Discussion:
External References:
https://irssi.org/security/irssi_sa_2018_01.txt
---
Created irssi tracking bugs for this issue:
Affects: fedora-all [bug 1532625]
2018-01-06
Published