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CVE-2023-47039

Publication date 25 November 2023

Last updated 24 July 2024

Ubuntu priority

Negligible

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

A vulnerability was found in Perl. This security issue occurs while Perl for Windows relies on the system path environment variable to find the shell (`cmd.exe`). When running an executable that uses the Windows Perl interpreter, Perl attempts to find and execute `cmd.exe` within the operating system. However, due to path search order issues, Perl initially looks for cmd.exe in the current working directory. This flaw allows an attacker with limited privileges to place`cmd.exe` in locations with weak permissions, such as `C:\ProgramData`. By doing so, arbitrary code can be executed when an administrator attempts to use this executable from these compromised locations.

Read the notes from the security team

Why is this CVE negligible priority?

Does not affect Ubuntu.

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
perl 23.10 mantic Ignored end of life, was ignored [only affects Perl for Windows]
23.04 lunar Ignored end of life, was ignored [only affects Perl for Windows]
22.04 LTS jammy Ignored only affects Perl for Windows
20.04 LTS focal Ignored only affects Perl for Windows
18.04 LTS bionic Ignored only affects Perl for Windows
16.04 LTS xenial Ignored only affects Perl for Windows
14.04 LTS trusty Ignored only affects Perl for Windows
perl6 23.10 mantic Not in release
23.04 lunar Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored only affects Perl for Windows
18.04 LTS bionic Ignored only affects Perl for Windows
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Ignored end of standard support
raku 23.10 mantic Ignored end of life, was ignored [only affects Perl for Windows]
23.04 lunar Ignored end of life, was ignored [only affects Perl for Windows]
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Ignored end of standard support
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Ignored end of standard support

Notes

alexmurray

Only affects Perl on Windows, so Ubuntu is not affected (even when running via WSL as far as I can tell from the CVE description)

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H