According to the versions of the irssi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Irssi before 1.0.7 and 1.1.x     before 1.1.1. A NULL pointer dereference occurs for an     'empty' nick.i1/4^ CVE-2018-7050i1/4%0

  - An issue was discovered in Irssi before 1.0.7 and 1.1.x     before 1.1.1. Certain nick names could result in     out-of-bounds access when printing theme     strings.i1/4^CVE-2018-7051i1/4%0

  - An issue was discovered in Irssi before 1.0.7 and 1.1.x     before 1.1.1. When the number of windows exceeds the     available space, a crash due to a NULL pointer     dereference would occur.i1/4^CVE-2018-7052i1/4%0

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

It was discovered that there was an issue in the irssi IRC client where certain nick names could result in out-of-bounds access when printing theme strings.

For Debian 7 'Wheezy', this issue has been fixed in irssi version 0.8.15-5+deb7u6. It was incorrectly missing from the upload of 0.8.15-5+deb7u5 announced as part of DLA-1289-1. Thanks to Ben Hutchings and Matus Uhlhar.

We recommend that you upgrade your irssi packages.

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

Multiple vulnerabilities have been discovered in Irssi, a terminal-based IRC client which can result in denial of service.

Irssi reports :

Use after free when server is disconnected during netsplits. Found by Joseph Bisch.

Use after free when SASL messages are received in unexpected order.
Found by Joseph Bisch.

NULL pointer dereference when an 'empty' nick has been observed by Irssi. Found by Joseph Bisch.

When the number of windows exceed the available space, Irssi would crash due to NULL pointer dereference. Found by Joseph Bisch.

Certain nick names could result in out of bounds access when printing theme strings. Found by Oss-Fuzz.

This update for irssi fixes the following security issues :

  - CVE-2018-7054: Use after free when server is     disconnected during netsplits

  - CVE-2018-7053: Use after free when SASL messages are     received in unexpected order

  - CVE-2018-7050: NULL pointer dereference when an 'empty'     nick has been observed

  - CVE-2018-7052: When the number of windows exceed the     available space, Irssi would crash due to NULL pointer     dereference

  - CVE-2018-7051: Certain nick names could result in out of     bounds access when printing theme strings

This is new version fixing multiple vulnerabilities: CVE-2018-7050, CVE-2018-7051, CVE-2018-7052, CVE-2018-7053, CVE-2018-7054.

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.

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

It was discovered that Irssi incorrectly handled certain empty nick names. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7050)

It was discovered that Irssi incorrectly handled certain nick names.
An attacker could possibly use this to access sensitive information.
(CVE-2018-7051)

It was discovered that Irssi incorrectly handled an increase in the number of windows. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7052)

It was discovered that Irssi incorrectly handled certain messages. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-7053)

It was discovered that Irssi incorrectly handled certain disconnections. An attacker could possibly use this to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 17.10. (CVE-2018-7054).

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.

ID	Name	Product	Family	Published	Updated	Severity
108465	EulerOS 2.0 SP2 : irssi (EulerOS-SA-2018-1061)	Nessus	Huawei Local Security Checks	3/20/2018	1/6/2021	high
108464	EulerOS 2.0 SP1 : irssi (EulerOS-SA-2018-1060)	Nessus	Huawei Local Security Checks	3/20/2018	1/6/2021	high
108608	Debian DLA-1318-1 : irssi security update	Nessus	Debian Local Security Checks	3/27/2018	1/11/2021	high
108774	Debian DSA-4162-1 : irssi - security update	Nessus	Debian Local Security Checks	4/2/2018	11/13/2018	critical
106881	FreeBSD : irssi -- multiple vulnerabilities (7afc5e56-156d-11e8-95f2-005056925db4)	Nessus	FreeBSD Local Security Checks	2/20/2018	11/10/2018	critical
106889	openSUSE Security Update : irssi (openSUSE-2018-171)	Nessus	SuSE Local Security Checks	2/20/2018	1/19/2021	critical
107008	Fedora 27 : irssi (2018-433d2dc3c7)	Nessus	Fedora Local Security Checks	2/27/2018	1/6/2021	critical
107013	Fedora 26 : irssi (2018-cbc52e8812)	Nessus	Fedora Local Security Checks	2/27/2018	1/6/2021	critical
106850	Slackware 14.0 / 14.1 / 14.2 / current : irssi (SSA:2018-046-01)	Nessus	Slackware Local Security Checks	2/16/2018	2/26/2018	critical
107193	Ubuntu 14.04 LTS / 16.04 LTS : Irssi vulnerabilities (USN-3590-1)	Nessus	Ubuntu Local Security Checks	3/7/2018	10/20/2023	critical
121144	Slackware 14.0 / 14.1 / 14.2 / current : irssi (SSA:2019-011-01)	Nessus	Slackware Local Security Checks	1/14/2019	2/24/2020	critical

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