Stack-based buffer overflow in file (Alpine package)

1) Stack-based buffer overflow

EUVDB-ID: #VU17822

Risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-8907

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to stack-based buffer overflow in the do_core_note function. A remote attacker can trick the victim into executing a file that submits malicious input to the targeted system with the file command, trigger memory corruption and perform a denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

file (Alpine package): 5.32-r0

CPE2.3

• cpe:2.3:o:alpine:file_alpine_package:5.32-r0:*:*:*:*:alpine_linux:*:3.6

External links

https://git.alpinelinux.org/aports/commit/?id=61e481480f83fcb6df33de7da9d782f0c229e945
https://git.alpinelinux.org/aports/commit/?id=e417e312a2460b385bd5003089c29af549f19b14
https://git.alpinelinux.org/aports/commit/?id=8b903beb77c68c97ba0aa36e58b6750edc06ca78
https://git.alpinelinux.org/aports/commit/?id=27d87cf2365bff16337278a4e93a16df7f33f2e4

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.