CVE-2023-46324 free5GC udm vulnerable to Invalid Curve Attack

What is CVE-2023-46324?

CVE-2023-46324 is a high-severity vulnerability in n/a, published on 23 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

pkg/suci/suci.go in free5GC udm before 1.2.0, when Go before 1.19 is used, allows an Invalid Curve Attack because it may compute a shared secret via an uncompressed public key that has not been validated. An attacker can send arbitrary SUCIs to the UDM, which tries to decrypt them via both its private key and the attacker's public key.

Weakness: CWE-347

Which versions are affected by CVE-2023-46324?

2 open source packages ship an affected version, including github.com/free5gc/udm. It affects 1 product.

Products include Free5gc Udm.

How do I fix CVE-2023-46324?

Upgrade github.com/free5gc/udm to 1.2.0 or later.

Is CVE-2023-46324 being exploited?

There is no known exploitation of CVE-2023-46324 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2026-33064 free5GC UDM DataChangeNotification Procedure Panic Due to Nil Pointer Dereference High 8.7
• CVE-2026-33191 free5GC UDM vulnerable to null byte injection in URL path parameters causing 500 Internal Server Error High 8.7
• CVE-2026-33192 free5GC UDM incorrectly returns 500 for empty supi path parameter in PATCH sdm-subscriptions reques High 8.7
• CVE-2026-33065 free5GC UDM incorrectly returns 500 for empty supi path parameter in DELETE sdm-subscriptions request Medium 6.9
• CVE-2026-27642 free5GC has Improper Input Validation in UDM UEAU Service Medium 6.6

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cqvv-r3g3-26rf.