PT-2025-1406 · Open5Gs · Open5Gs Mme

Published 2025-01-22 · Updated 2025-01-27 · CVE-2023-37014

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Open5GS MME versions <= 2.6.4

Description The issue concerns an assertion in Open5GS MME that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a UE Context Release Request message missing a required MME UE S1AP ID field to repeatedly crash the MME, resulting in denial of service.

Recommendations For Open5GS MME versions <= 2.6.4, update to a version greater than 2.6.4 to resolve the issue. As a temporary workaround, consider restricting access to the S1AP interface to minimize the risk of exploitation. Avoid sending UE Context Release Request messages without the required MME UE S1AP ID field until the issue is resolved.

Exploit

Fix

Resource Exhaustion

Allocation of Resources Without Limits

Weakness Enumeration

CWE-400

CWE-770

Related Identifiers

CVE-2023-37014

Affected Products

Open5Gs Mme

References · 5

• 🔥 https://cellularsecurity.org/ransacked · Exploit
• https://osv.dev/vulnerability/CVE-2023-37014 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-37014 · Security Note
• https://twitter.com/cracbot/status/1883763028510077262 · Twitter Post
• https://twitter.com/CVEnew/status/1882300210816167991 · Twitter Post