CRITICAL

CVE-2023-37460

CVSS v3

9.8

CRITICAL

EPSS Score

40.7%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

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.

Technical details

Published
7/25/2023

Frequently asked questions

What is 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. 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.

Is CVE-2023-37460 actively exploited?

Active exploitation of CVE-2023-37460 has not been confirmed. The EPSS score is 40.7%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-37460?

CVE-2023-37460 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2023-37460 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.