#VU76124 Out-of-bounds read in bl - CVE-2020-8244

Vulnerability identifier: #VU76124

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-2020-8244

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
bl
Other software / Other software solutions

Vendor: rvagg

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted file and trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

bl: before 1.2.3

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External links
https://hackerone.com/reports/966347
https://lists.debian.org/debian-lts-announce/2021/06/msg00028.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.