CVE-2021-4287

low-risk
Published 2022-12-27

A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is an unknown function of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation leads to symlink following. It is possible to launch the attack remotely. Upgrading to version 2.3.3 is able to address this issue. The name of the patch is fa0c0bd59b8588814756942fe4cb5452e76c1dcd. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216876.

Do I need to act?

~
1.7% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.0/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Microsoft

References (10)

Patch https://github.com/ReFirmLabs/binwalk/commit/fa0c0bd59b8588814756942fe4cb5452e76...
Patch https://github.com/ReFirmLabs/binwalk/pull/556
Release Notes https://github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3
Third Party Advisory https://vuldb.com/?ctiid.216876
Third Party Advisory https://vuldb.com/?id.216876
Patch https://github.com/ReFirmLabs/binwalk/commit/fa0c0bd59b8588814756942fe4cb5452e76...
Patch https://github.com/ReFirmLabs/binwalk/pull/556
Release Notes https://github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3
Third Party Advisory https://vuldb.com/?ctiid.216876
Third Party Advisory https://vuldb.com/?id.216876
25
/ 100
low-risk
Severity 16/34 · Moderate
Exploitability 4/34 · Minimal
Exposure 5/34 · Minimal