ReFirm Labs binwalk up to 2.3.2 Archive Extraction extractor.py symlink
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.4 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is some unknown functionality of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation with an unknown input leads to a symlink vulnerability. CWE is classifying the issue as CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was released 12/27/2022 as 556. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2021-4287. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.
Upgrading to version 2.3.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch fa0c0bd59b8588814756942fe4cb5452e76c1dcd is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.
Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.5VulDB Meta Temp Score: 5.4
VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CNA Base Score: 5.0
CNA Vector (VulDB): 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: SymlinkCWE: CWE-61 / CWE-59
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: binwalk 2.3.3
Patch: fa0c0bd59b8588814756942fe4cb5452e76c1dcd
Timeline
12/27/2022 🔍12/27/2022 🔍
12/27/2022 🔍
01/24/2023 🔍
Sources
Advisory: 556Status: Confirmed
CVE: CVE-2021-4287 (🔍)
Entry
Created: 12/27/2022 11:37Updated: 01/24/2023 21:47
Changes: 12/27/2022 11:37 (41), 12/27/2022 11:38 (2), 12/27/2022 11:40 (1), 01/24/2023 21:34 (2), 01/24/2023 21:47 (21)
Complete: 🔍
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