#VU105901 Stack-based buffer overflow in jq - CVE-2024-53427

Vulnerability identifier: #VU105901

Vulnerability risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-53427

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
jq
Other software / Other software solutions

Vendor: stedolan (Stephen Dolan)

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the decNumberCopy() function in decNumber.c. A remote attacker can pass specially crafted input to the application, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability exists due to incomplete fix for #VU106250 (CVE-2023-50268).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

jq: 1.7 - 1.7.1

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External links
https://gist.github.com/Ekkosun/a83870ce7f3b7813b9b462a395e8ad92
https://github.com/jqlang/jq/blob/71c2ab509a8628dbbad4bc7b3f98a64aa90d3297/src/decNumber/decNumber.c#L3375
https://github.com/jqlang/jq/issues/3196
https://github.com/jqlang/jq/security/advisories/GHSA-x6c3-qv5r-7q22

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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.