#VU28184 Buffer overflow in libexif - CVE-2020-13114

Vulnerability identifier: #VU28184

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-2020-13114

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

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

Vendor: libexif.sourceforge.net

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when handling Canon EXIF MakerNote data. A remote attacker can send a specially crafted file, trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libexif: 0.6.9 - 0.6.21

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External links
https://github.com/libexif/libexif/commit/e6a38a1a23ba94d139b1fa2cd4519fdcfe3c9bab

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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.