#VU67656 Resource management error in MariaDB - CVE-2022-38791

Vulnerability identifier: #VU67656

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-38791

CWE-ID: CWE-399

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MariaDB
Operating systems & Components / Operating system package or component

Vendor: Debian

Description

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

The vulnerability exists due to compress_write() function in extra/mariabackup/ds_compress.cc does not release data_mutex upon a stream write failure. A local user can trigger a deadlock and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MariaDB: 10.0.0 - 10.0.38, 10.1.0 - 10.1.48, 10.2.0 - 10.2.44, 10.3.0 - 10.3.35, 10.4.0 - 10.4.25, 10.5.0 - 10.5.16, 10.6.0 - 10.6.8, 10.7.1 - 10.7.4, 10.8.1 - 10.8.3, 10.9.1

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External links
https://jira.mariadb.org/browse/MDEV-28719

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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.