Vulnerability in Microsoft Binwalk
CVE-2021-4287
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.019 (79.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Microsoft Binwalk
- Refirm Labs Binwalk — versions 2.3.0, 2.3.1, 2.3.2
Weakness classification (CWE)
References
- vuldb.com/ (Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, permissions-required, Third Party Advisory)
- github.com/ReFirmLabs/binwalk/pull/556 (issue-tracking, Patch, Third Party Advisory)
- github.com/ReFirmLabs/binwalk/commit/fa0c0bd59b8588814756942fe4cb5452e76c1dcd (Patch, Third Party Advisory, patch)
- github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3 (Third Party Advisory, Release Notes, patch)
Frequently asked questions
- What is CVE-2021-4287?
- CVE-2021-4287 is a medium-severity vulnerability in Microsoft Binwalk, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 5.0/10. Published 2022-12-27.
- How severe is CVE-2021-4287?
- Medium severity. CVSS v3 base score is 5.0 out of 10.