#VU65442 Integer overflow in HarfBuzz - CVE-2022-33068

Vulnerability identifier: #VU65442

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-33068

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HarfBuzz
Other software / Other software solutions

Vendor: Freedesktop.org

Description

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

The vulnerability exists due to integer overflow in hb-ot-shape-fallback.cc. A remote attacker can pass specially crafted data to the application, trigger integer overflow and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

HarfBuzz: 4.0.0 - 4.3.0

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External links
https://github.com/harfbuzz/harfbuzz/issues/3557
https://github.com/harfbuzz/harfbuzz/commit/62e803b36173fd096d7ad460dd1d1db9be542593
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FQBJ24W6TXLSAQWCFW7IBGUMX4AJI3S4/

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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.