CVE-2023-26430 Command injection in OX App Suite

Low 3.5 Published 2 Aug 2023 Updated 15 Oct 2024

Authenticated attackers can inject control characters into SIEVE mail filters to bypass restrictions or disrupt processing, requiring vendor patches.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-26430?

CVE-2023-26430 is a low-severity command injection vulnerability in OX App Suite, published on 2 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Attackers with access to user accounts can inject arbitrary control characters to SIEVE mail-filter rules. This could be abused to access SIEVE extension that are not allowed by App Suite or to inject rules which would break per-user filter processing, requiring manual cleanup of such rules. We have added sanitization to all mail-filter APIs to avoid forwardning control characters to subsystems. No publicly available exploits are known.

Weakness: CWE-77

Which versions are affected by CVE-2023-26430?

It affects 1 product.

Products include Open-Xchange Open-Xchange Appsuite Backend.

How do I fix CVE-2023-26430?

No fix has been published for CVE-2023-26430 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2023-26430 being exploited?

There is no known exploitation of CVE-2023-26430 in the wild and no public exploit code.

Sources

Also known as GHSA-9rfr-rprq-pv78.