Remote code execution in HarfBuzz

1) Heap-based buffer overflow

EUVDB-ID: #VU102297

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-56732

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the hb_cairo_glyphs_from_buffer() function in hb-cairo.cc. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HarfBuzz: 8.5.0 - 10.1.0

CPE2.3

• cpe:2.3:a:freedesktop_org:harfbuzz:8.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:freedesktop_org:harfbuzz:9.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:freedesktop_org:harfbuzz:10.0.0:*:*:*:*:*:*:*

External links

https://github.com/harfbuzz/harfbuzz/commit/1767f99e2e2196c3fcae27db6d8b60098d3f6d26
https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-qmp9-xqm5-jh6m

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.