GHSA-2x7h-96h5-rq84

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    GHSA-2x7h-96h5-rq84

    Published: 1 Feb 2022Last Modified: 19 Feb 2024

    Summary: Path Traversal in SharpZipLib

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2021-32841, https://github.com/icsharpcode/SharpZipLib/commit/5c3b293de5d65b108e7f2cd0ea8f81c1b8273f78, https://github.com/icsharpcode/SharpZipLib, https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3, https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib

    Affected packages

    Package

    Name: SharpZipLib

    Purl: pkg:nuget/SharpZipLib

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 1.3.0
    Fixed -1.3.3

    Affected versions

    1.3.0
    1.3.1
    1.3.2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-2x7h-96h5-rq84 | CVE-DB