CVE-2023-32844
Published: 04 December 2023
Summary
CVE-2023-32844 is a high-severity Reachable Assertion (CWE-617) vulnerability in Mediatek Nr15. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 9.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
In 5G Modem components, CVE-2023-32844 is a reachable assertion flaw (CWE-617) stemming from improper error handling of malformed RRC messages. The issue affects MediaTek modem firmware and can trigger an immediate system crash, producing a remote denial of service. The vulnerability carries a CVSS 3.1 base score of 7.5 with network attack vector, low complexity, and no privileges or user interaction required.
An unauthenticated attacker with network access to a vulnerable device can transmit specially crafted RRC messages that the modem fails to handle gracefully, resulting in loss of availability. No additional execution rights are needed, and the attack can be carried out remotely without user involvement.
MediaTek’s December 2023 security bulletin lists the issue under Issue ID MOLY01130183 (MSV-850) and supplies the corresponding patch identifier MOLY01128524 for affected modem builds.
EPSS for the CVE remains flat at 0.0539 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-37065
Vulnerability details
In 5G Modem, there is a possible system crash due to improper error handling. This could lead to remote denial of service when receiving malformed RRC messages, with no additional execution privileges needed. User interaction is not needed for exploitation.…
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Patch ID: MOLY01128524; Issue ID: MOLY01130183 (MSV-850).
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.