#VU19220 Out-of-bounds read in Exiv2 - CVE-2019-13504

Vulnerability identifier: #VU19220

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-13504

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Exiv2
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability exists due to an out-of-bounds read error in the "Exiv2::MrwImage::readMetadata" function in the "mrwimage.cpp" file. A remote attacker can create a specially crafted media file, trick the victim into opening it and cause the affected application to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Exiv2: 0.23 - 0.27.2

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External links
https://fuzzit.dev/2019/07/11/discovering-cve-2019-13504-cve-2019-13503-and-the-importance-of-api-fuzzing/
https://github.com/Exiv2/exiv2/pull/943

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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. However, proof of concept for this vulnerability is available.