CVE-2024-5579
Published: 22 November 2024
Summary
CVE-2024-5579 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Alltena Allegra. Its CVSS base score is 7.2 (High).
Operationally, ranked in the top 6.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Allegra contains a deserialization of untrusted data vulnerability in the renderFieldMatch method that permits remote code execution. The flaw stems from insufficient validation of user-supplied input, allowing an authenticated attacker to supply a malicious serialized object that is deserialized without safeguards. Affected installations run the code in the context of the LOCAL SERVICE account, and the issue was originally reported as ZDI-CAN-23451.
An attacker must possess valid credentials with administrative privileges to reach the vulnerable method over the network. Successful exploitation grants arbitrary code execution on the server, enabling full compromise of the application and underlying host. The CVSS 3.0 base score of 7.2 reflects the high impact on confidentiality, integrity, and availability combined with the requirement for high-privileged authentication.
The vendor addressed the issue in Allegra version 7.5.2, as noted in the corresponding release notes, and the Zero Day Initiative published advisory ZDI-24-1162 with additional technical detail. The EPSS score has remained flat at 0.1101 with no observed increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-47120
Vulnerability details
Allegra renderFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Authentication is required to exploit this vulnerability. The specific flaw exists within the renderFieldMatch method. The…
more
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-23451.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.