Vulnerability identifier: #VU74864

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42869

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Libxml2
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

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

The vulnerability exists due to a NULL pointer dereference error in xmlSchemaCheckCOSSTDerivedOK. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Libxml2: 2.0.0 - 2.10.3

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External links
http://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
http://gitlab.gnome.org/GNOME/libxml2/-/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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