SUSE update for systemd

1) Uncontrolled Memory Allocation

EUVDB-ID: #VU55034

Risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-33910

CWE-ID: CWE-789 - Uncontrolled Memory Allocation

Exploit availability: Yes

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to stack exhaustion within the basic/unit-name.c in systemd. A local user can crash the systemd (PID 1) and cause a kernel panic.

Mitigation

Update the affected package systemd to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Software Development Kit: 12-SP5

SUSE Linux Enterprise Server: 12-SP5

systemd-bash-completion: before 228-157.33.1

systemd-debuginfo-32bit: before 228-157.33.1

systemd-32bit: before 228-157.33.1

libudev1-debuginfo-32bit: before 228-157.33.1

libudev1-32bit: before 228-157.33.1

libsystemd0-debuginfo-32bit: before 228-157.33.1

libsystemd0-32bit: before 228-157.33.1

udev-debuginfo: before 228-157.33.1

udev: before 228-157.33.1

systemd-sysvinit: before 228-157.33.1

systemd: before 228-157.33.1

libudev1-debuginfo: before 228-157.33.1

libudev1: before 228-157.33.1

libsystemd0-debuginfo: before 228-157.33.1

libsystemd0: before 228-157.33.1

systemd-devel: before 228-157.33.1

systemd-debugsource: before 228-157.33.1

systemd-debuginfo: before 228-157.33.1

libudev-devel: before 228-157.33.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213611-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.