CVEvulnerability

CVE-2021-43099

4.9 MEDIUM Published 2022-03-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-03-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.9 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:N/I:P/A:N
Weaknesses
CWE-22

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 configurations

• diyhi bbs 5.3

Related

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

References