CVE-2022-43677: free5GC vulnerable to malformed NGAP message crashing the AMF and NGAP decoders

October 24, 2022 (updated October 25, 2022)

In free5GC 3.2.1, a malformed NGAP message can crash the AMF and NGAP decoders via an index-out-of-range panic in aper.GetBitString.

References

github.com/advisories/GHSA-59hj-62f5-fgmc
github.com/free5gc/free5gc/issues/402
nvd.nist.gov/vuln/detail/CVE-2022-43677

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