#VU20305 Integer overflow in Exiv2 - CVE-2019-13110

Vulnerability identifier: #VU20305

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-13110

CWE-ID: CWE-190

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 perform denial of service (DoS) attack.

The vulnerability exists due to integer overflow in CiffDirectory::readDirectory() function. A remote attacker can create a specially crafted CRW image, pass it to the application, trigger integer overflow and crash the affected application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Exiv2: 0.23 - 0.27.1

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External links
https://github.com/Exiv2/exiv2/issues/843
https://github.com/Exiv2/exiv2/pull/844

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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.