CVE-2019-19725 Use after free in n/a

Critical 9.8 Published 11 Dec 2019 Updated 5 Aug 2024

A double free vulnerability in sysstat allows attackers to cause denial of service or potentially execute arbitrary code.

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

What is CVE-2019-19725?

CVE-2019-19725 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 11 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

sysstat through 12.2.0 has a double free in check_file_actlst in sa_common.c.

Weakness: CWE-415

Which versions are affected by CVE-2019-19725?

It affects 3 products.

Linux distribution packages (18)

`sysstat` SUSE:HPE Helion OpenStack 8	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Desktop 12 SP4	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Module for Basesystem 15 SP1	All versions	`12.0.2-3.21.18`
`sysstat` SUSE:Linux Enterprise Module for Server Applications 15 SP1	All versions	`12.0.2-3.21.18`
`sysstat` SUSE:Linux Enterprise Server 12 SP2-BCL	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server 12 SP3-BCL	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server 12 SP3-LTSS	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server 12 SP4	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server 12 SP5	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:OpenStack Cloud 8	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:OpenStack Cloud 9	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:OpenStack Cloud Crowbar 8	All versions	`12.0.2-10.36.1`
`sysstat` SUSE:OpenStack Cloud Crowbar 9	All versions	`12.0.2-10.36.1`
`sysstat` openSUSE:Leap 15.1	All versions	`12.0.2-lp151.3.15.1`

Products include Canonical Ubuntu Linux, Debian Debian Linux, Sysstat Project Sysstat.

How do I fix CVE-2019-19725?

Apply the vendor's patch.

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-2019-19725 being exploited?

There is no known exploitation of CVE-2019-19725 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-19725, GHSA-25j9-j567-gc6p, MGASA-2020-0064, SUSE-SU-2020:0026-1, SUSE-SU-2020:0026-2, SUSE-SU-2020:1419-1 and 2 more.