A new security advisory for Arch Linux has been published
Arch Linux Security Advisory ASA-201802-8Irssi Security Update for Arch Linux
=========================================
Severity: High
Date : 2018-02-15
CVE-ID : CVE-2018-7050 CVE-2018-7051 CVE-2018-7052 CVE-2018-7053
CVE-2018-7054
Package : irssi
Type : multiple issues
Remote : Yes
Link : https://security.archlinux.org/AVG-616
Summary
=======
The package irssi before version 1.1.1-1 is vulnerable to multiple
issues including arbitrary code execution, information disclosure and
denial of service.
Resolution
==========
Upgrade to 1.1.1-1.
# pacman -Syu "irssi>=1.1.1-1"
The problems have been fixed upstream in version 1.1.1.
Workaround
==========
None.
Description
===========
- CVE-2018-7050 (arbitrary code execution)
An issue was discovered in Irssi before 1.1.1. A NULL pointer
dereference occurs for an "empty" nick.
- CVE-2018-7051 (information disclosure)
An issue was discovered in Irssi before 1.1.1. Certain nick names could
result in out-of-bounds access when printing theme strings.
- CVE-2018-7052 (denial of service)
An issue was discovered in Irssi before 1.1.1. When the number of
windows exceeds the available space, a crash due to a NULL pointer
dereference would occur.
- CVE-2018-7053 (arbitrary code execution)
An issue was discovered in Irssi before 1.1.1. There is a use-after-
free when SASL messages are received in an unexpected order.
- CVE-2018-7054 (arbitrary code execution)
An issue was discovered in Irssi before 1.1.1. There is a use-after-
free when a server is disconnected during netsplits.
Impact
======
A remote attacker is able to crash the application, execute arbitrary
code or read memory via a malicious server or by tricking a user to use
malicious commands.
References
==========
https://irssi.org/security/irssi_sa_2018_02.txt
https://security.archlinux.org/CVE-2018-7050
https://security.archlinux.org/CVE-2018-7051
https://security.archlinux.org/CVE-2018-7052
https://security.archlinux.org/CVE-2018-7053
https://security.archlinux.org/CVE-2018-7054