SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Starting version 1.0.0 and prior to version 1.3.3, a check was added if the destination file is under a destination directory. However, it is not enforced that `_baseDirectory` ends with slash. If the _baseDirectory is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins as the destination directory one level up from the directory, i.e. `/home/user/dir.sh`. Because of the file name and destination directory constraints, the arbitrary file creation impact is limited and depends on the use case. Version 1.3.3 fixed this vulnerability.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-01-26T21:10:10

Updated: 2024-08-03T23:33:55.920Z

Reserved: 2021-05-12T00:00:00

Link: CVE-2021-32842

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-01-26T21:15:13.337

Modified: 2022-02-07T19:09:41.943

Link: CVE-2021-32842

cve-icon Redhat

No data.