CVE-2020-24046 Privilege escalation in n/a

High 7.2 Published 17 Sep 2020 Updated 4 Aug 2024

An authenticated attacker can escalate privileges to root by modifying the admin user's shell and UID via the backup import feature.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-24046?

CVE-2020-24046 is a high-severity vulnerability in n/a, published on 17 Sep 2020. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07. It limits the admin user to a restricted shell, allowing execution of a small number of tools of the operating system. This restricted shell can be bypassed after changing the properties of the user admin in the operating system file /etc/passwd. This file cannot be accessed though the restricted shell, but it can be modified by abusing the Backup/Import Backup functionality of the web interface. An authenticated attacker would be able to obtain the file /var/tmp/admin.passwd after executing a Backup operation. This file can be manually modified to change the GUID of the user to 0 (root) and change the restricted shell to a normal shell /bin/sh. After the modification is done, the file can be recompressed to a .tar.bz file and imported again via the Import Backup functionality. The properties of the admin user will be overwritten and a root shell will be granted to the user upon the next successful login.

Weakness: CWE-269

Which versions are affected by CVE-2020-24046?

It affects 1 product.

Products include Titanhq Spamtitan.

How do I fix CVE-2020-24046?

No fix has been published for CVE-2020-24046 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-24046 being exploited?

There is no known exploitation of CVE-2020-24046 in the wild and no public exploit code.

Sources

Also known as GHSA-m5r6-8jfm-hp4w.