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CVE-2021-32841

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 26-01-2022 11:15
Last modified: - 07-02-2022 08:09
Total changes: - 3

Description

SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Starting version 1.3.0 and prior to version 1.3.3, a check was added if the destination file is under destination directory. However, it is not enforced that `destDir` ends with slash. If the `destDir` is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins with the destination 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 contains a patch for this vulnerability.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Low
Attack complexity
Network
Attack vector
None
Availability
None
Confidentiality
Low
Integrity
None
Privileges required
Unchanged
Scope
None
User interaction
5.3
Base score
3.9
1.4
Exploitability score
Impact score
 

Verification logic

OR
vendor=sharpziplib_project AND product=sharpziplib AND versionStartIncluding=1.3.0 AND versionEndExcluding=1.3.3
 

Reference

 


Keywords

NVD

 

CVE-2021-32841

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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