#VU71184 XML Entity Expansion in Linaro Automated Validation Architecture (LAVA) - CVE-2022-44641

Vulnerability identifier: #VU71184

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-44641

CWE-ID: CWE-776

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linaro Automated Validation Architecture (LAVA)
Server applications / Remote management servers, RDP, SSH

Vendor: Linaro Limited

Description

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

The vulnerability exists due to XML entity expansion when handling XMLRPC requests. A remote authenticated user can cause a recursive XML entity expansion and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linaro Automated Validation Architecture (LAVA): 2020.01 - 2022.10

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External links
https://lists.lavasoftware.org/archives/list/lava-announce@lists.lavasoftware.org/thread/WHXGQMIZAPW3GCQEXYHC32N2ZAAAIYCY/
https://www.debian.org/security/2023/dsa-5318

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.