#VU69256 Out-of-bounds write in LibRaw - CVE-2020-35530

Vulnerability identifier: #VU69256

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-35530

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

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

Vendor: LibRaw LLC

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within the new_node() function in librawsrcx3fx3f_utils_patched.cpp. A remote attacker can create a specially crafted X3F file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibRaw: before 0.20.0

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External links
https://github.com/LibRaw/LibRaw/commit/11c4db253ef2c9bb44247b578f5caa57c66a1eeb
https://github.com/LibRaw/LibRaw/issues/272
https://lists.debian.org/debian-lts-announce/2022/09/msg00024.html

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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.