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

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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 : Modified

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

Modified: 2024-11-21T06:07:51.860

Link: CVE-2021-32842

cve-icon Redhat

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