What’s Vulnerable › Vulnerabilities

CVE-2023-46324

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-23 · updated 2026-06-17
• Weakness: CWE-347

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.

Affected products

• free5gc udm: before 1.2.0 — fixed in 1.2.0

How to fix

Upgrade to a fixed version: free5gc udm 1.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/free5gc/udm/compare/v1.1.1...v1.2.0
• https://github.com/free5gc/udm/pull/20
• https://www.gsma.com/security/wp-content/uploads/2023/10/0073-invalid_curve.pdf
• https://github.com/free5gc/udm/compare/v1.1.1...v1.2.0
• https://github.com/free5gc/udm/pull/20
• https://www.gsma.com/security/wp-content/uploads/2023/10/0073-invalid_curve.pdf

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