CVE-2023-51641 Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code via unsafe deserialization in Allegra, requiring authentication which can be bypassed via registration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-51641?
CVE-2023-51641 is a critical unsafe deserialization vulnerability in Allegra, published on 22 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, product implements a registration mechanism that can be used to create a user with a sufficient privilege level.
The specific flaw exists within the renderFieldMatch method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22505.
Weakness: CWE-502
Which versions are affected by CVE-2023-51641?
It affects 1 product.
Products include Alltena Allegra.
How do I fix CVE-2023-51641?
No fix has been published for CVE-2023-51641 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2023-51641 being exploited?
There is no known exploitation of CVE-2023-51641 in the wild and no public exploit code.
Other vulnerabilities in Allegra
- CVE-2025-6216 Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability
- CVE-2023-51638 Allegra Hard-coded Credentials Authentication Bypass Vulnerability
- CVE-2023-51639 Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability
- CVE-2023-51642 Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability
- CVE-2023-51644 Allegra SiteConfigAction Improper Access Control Remote Code Execution Vulnerability
Sources
Also known as GHSA-5gqf-2mwx-x4qq.