#VU84705 Out-of-bounds read in Exiv2 - CVE-2020-18771

Vulnerability identifier: #VU84705

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-18771

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 perform a denial of service (DoS) attack or gain access to sensitive information.

The vulnerability exists due to global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp. A remote attacker can perform a denial of service attack or gain access to sensitive information.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Exiv2: before 0.27.1

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External links
https://github.com/Exiv2/exiv2/issues/756
https://cwe.mitre.org/data/definitions/126.html
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.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.