CVE-2023-5826 Netentsec NS-ASG Application Security Gateway list_onlineuser.php sql injection

Medium 5.5 Published 27 Oct 2023 Updated 2 Aug 2024

Attackers can perform SQL injection via the SessionId parameter in list_onlineuser.php, potentially accessing or modifying database contents.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-5826?

CVE-2023-5826 is a medium-severity SQL injection vulnerability in Netentsec NS-ASG Application Security Gateway, published on 27 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability was found in Netentsec NS-ASG Application Security Gateway 6.3 and classified as critical. Affected by this issue is some unknown functionality of the file /admin/list_onlineuser.php. The manipulation of the argument SessionId leads to sql injection. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-243716. NOTE: We tried to contact the vendor early about the disclosure but the official mail address was not working properly.

Weakness: CWE-89

Which versions are affected by CVE-2023-5826?

It affects 1 product.

Products include Netentsec Application Security Gateway.

How do I fix CVE-2023-5826?

No fix has been published for CVE-2023-5826 yet. Limit exposure of the affected software until one is available.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2023-5826 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-5826 exists.

Sources

Also known as GHSA-2x4w-j73f-g9qq.