CVE-2019-13045 Use after free in n/a

High 8.1 Published 29 Jun 2019 Updated 4 Aug 2024

A use-after-free vulnerability in Irssi's SASL login process allows attackers to execute arbitrary code or cause a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-13045?

CVE-2019-13045 is a high-severity use after free vulnerability in n/a, published on 29 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Irssi before 1.0.8, 1.1.x before 1.1.3, and 1.2.x before 1.2.1, when SASL is enabled, has a use after free when sending SASL login to the server.

Weakness: CWE-416

Which versions are affected by CVE-2019-13045?

It affects 1 product.

Linux distribution packages (14)

`irssi` AlmaLinux:8	All versions	`1.1.1-3.el8`
`irssi-devel` AlmaLinux:8	All versions	`1.1.1-3.el8`
`irssi` Red Hat:enterprise_linux:8::appstream	All versions	`0:1.1.1-3.el8`
`irssi-debuginfo` Red Hat:enterprise_linux:8::appstream	All versions	`0:1.1.1-3.el8`
`irssi-debugsource` Red Hat:enterprise_linux:8::appstream	All versions	`0:1.1.1-3.el8`
`irssi-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:1.1.1-3.el8`
`irssi-debugsource` Red Hat:enterprise_linux:8::crb	All versions	`0:1.1.1-3.el8`
`irssi-devel` Red Hat:enterprise_linux:8::crb	All versions	`0:1.1.1-3.el8`
`irssi` Rocky Linux:8	All versions	`0:1.1.1-3.el8`
`irssi` SUSE:Package Hub 12	All versions	`1.1.3-bp150.33.1`
`irssi` SUSE:Package Hub 15	All versions	`1.1.3-bp150.33.1`
`irssi` SUSE:Package Hub 15 SP1	All versions	`1.1.3-bp151.3.3.3`
`irssi` openSUSE:Leap 15.0	All versions	`1.1.3-bp150.33.1`
`irssi` openSUSE:Leap 15.1	All versions	`1.1.3-bp150.33.1`

Products include Irssi Irssi.

How do I fix CVE-2019-13045?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2019-13045 being exploited?

There is no known exploitation of CVE-2019-13045 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2019-13045, ALSA-2020:1616, AZL-45354, DEBIAN-CVE-2019-13045, DLA-3025-1, GHSA-pwrg-h5j6-7f43 and 6 more.