The format_send_to_gui function in the format parsing code in Irssi before 0.8.20 allows remote attackers to cause a denial of service (heap corruption and crash) via vectors involving the length of a string.

This is new version of irssi fixing security bugs, for details see upstream announcement:
https://github.com/irssi/irssi/releases/tag/0.8.20

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The IRC client irssi was updated to 0.8.20, fixing various bugs and security issues.

  - CVE-2016-7044: The unformat_24bit_color function in the     format parsing code in Irssi, when compiled with     true-color enabled, allowed remote attackers to cause a     denial of service (heap corruption and crash) via an     incomplete 24bit color code.

  - CVE-2016-7045: The format_send_to_gui function in the     format parsing code in Irssi allowed remote attackers to     cause a denial of service (heap corruption and crash)     via vectors involving the length of a string.

See https://irssi.org/security/irssi_sa_2016.txt for more details.

  - CVE-2016-7553: A information disclosure vulnerability in     irssi buf.pl

See https://irssi.org/2016/09/22/buf.pl-update/ for more information.

Security fix for CVE-2016-7553.

----

This is new version of irssi fixing security bugs, for details see upstream announcement:
https://github.com/irssi/irssi/releases/tag/0.8.20

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Gabriel Campana and Adrien Guinet discovered that the format parsing code in Irssi did not properly verify 24bit color codes. A remote attacker could use this to cause a denial of service (application crash). (CVE-2016-7044)

Gabriel Campana and Adrien Guinet discovered that a buffer overflow existed in the format parsing code in Irssi. A remote attacker could use this to cause a denial of service (application crash).
(CVE-2016-7045).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Irssi reports :

Remote crash and heap corruption. Remote code execution seems difficult since only Nuls are written.

Gabriel Campana and Adrien Guinet from Quarkslab discovered two remotely exploitable crash and heap corruption vulnerabilities in the format parsing code in Irssi, a terminal based IRC client.

New irssi packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.

ID	Name	Product	Family	Severity
94773	Fedora 25 : irssi (2016-0cadb1feae)	Nessus	Fedora Local Security Checks	high
94093	openSUSE Security Update : irssi (openSUSE-2016-2524)	Nessus	SuSE Local Security Checks	high
93979	Fedora 24 : irssi (2016-a64716084e)	Nessus	Fedora Local Security Checks	high
93972	Fedora 23 : irssi (2016-0551065fe0)	Nessus	Fedora Local Security Checks	high
93649	Ubuntu 16.04 LTS : Irssi vulnerabilities (USN-3086-1)	Nessus	Ubuntu Local Security Checks	high
93640	FreeBSD : irssi -- heap corruption and missing boundary checks (e78261e4-803d-11e6-a590-14dae9d210b8)	Nessus	FreeBSD Local Security Checks	high
93621	Debian DSA-3672-1 : irssi - security update	Nessus	Debian Local Security Checks	high
93619	Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : irssi (SSA:2016-265-03)	Nessus	Slackware Local Security Checks	high

Detections

Analytics

CVE-2016-7045

high

Tenable Plugins

high

high

high

high

high

high

high

high