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Vulnerability CVE-2021-43099
Published: 2022-03-28 Modified: 2022-03-29
| 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). |
Type:
CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))
CVSS2 => (AV:N/AC:L/Au:S/C:N/I:P/A:N)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
4/10 |
2.9/10 |
8/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
Single time |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
Partial |
None |
References: |
https://github.com/diyhi/bbs/issues/51
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