CVE-2021-43099

Published: Mar 28, 2022Modified: Nov 21, 2024

4.9

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Exploitability: 1.2 / Impact: 3.6

Source: NVD

Description

An Archive Extraction (AKA "Zip Slip) vulnerability exists in bbs 5.3 in the UpgradeNow function in UpgradeManageAction.java, which unzips the arbitrary upladed zip file without checking filenames. The vulnerability is exploited using a specially crafted archive that holds directory traversal filenames (e.g. ../../evil.exe).

Affected (1)

Products: Diyhi: Bbs

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Diyhi Bbs	Version 5.3

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (2)

https://github.com/diyhi/bbs/issues/51

Source: cve@mitre.org

ExploitThird Party Advisory

https://github.com/diyhi/bbs/issues/51

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.