Critical severity · published Jul 25, 2023
CVE-2023-37460
Plexis Archiver is a collection of Plexus components to create archives or extract archives to a directory with a unified `Archiver`/`UnArchiver` API
9.8
CVSS
2.5%
EPSS
No
On KEV
Description
Plexis Archiver is a collection of Plexus components to create archives or extract archives to a directory with a unified `Archiver`/`UnArchiver` API. Prior to version 4.8.0, using AbstractUnArchiver for extracting an archive might lead to an arbitrary file creation and possibly remote code execution. When extracting an archive with an entry that already exists in the destination directory as a symbolic link whose target does not exist - the `resolveFile()` function will return the symlink's source instead of its target, which will pass the verification that ensures the file will not be extracted outside of the destination directory. Later `Files.newOutputStream()`, that follows symlinks by default, will actually write the entry's content to the symlink's target. Whoever uses plexus archiver to extract an untrusted archive is vulnerable to an arbitrary file creation and possibly remote code execution. Version 4.8.0 contains a patch for this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PL
Plexus-archiver · Codehaus-plexus
before 4.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-37460
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-37460
Patch
https://github.com/codehaus-plexus/plexus-archiver/commit/54759839fbdf85caf8442076f001d5fd64e0dcb2
Release Notes
https://github.com/codehaus-plexus/plexus-archiver/releases/tag/plexus-archiver-4.8.0
Exploit
https://github.com/codehaus-plexus/plexus-archiver/security/advisories/GHSA-wh3p-fphp-9h2m
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