#VU31920 Buffer overflow in LibRaw - CVE-2020-15503

Vulnerability identifier: #VU31920

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-2020-15503

CWE-ID: CWE-119

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in "decoders/unpack_thumb.cpp", "postprocessing/mem_image.cpp" and u"tils/thumb_utils.cpp". A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibRaw: 0.8.11 - 0.19.1

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00075.html
https://github.com/LibRaw/LibRaw/commit/20ad21c0d87ca80217aee47533d91e633ce1864d
https://github.com/LibRaw/LibRaw/compare/0.20-Beta3...0.20-RC1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7HM2DS6HA4YZREI3BYGS75M6D76WMW62/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CSXAJKZ4VNDYVQULJNY4XDPWHIJDTB4P/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DNGDWTO45TU4KGND75EUUEGUMNSOYC7H/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QCVKD7PTO7UQAVUTBHJAKBKYLPQQGAMZ/
https://www.libraw.org/news/libraw-0-20-rc1

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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.