CVE-2022-43677 json
free5GC vulnerable to malformed NGAP message crashing the AMF and NGAP decoders
published 2022-10-24 4 y ago modified 2026-06-17 4 mo ago also GHSA-59hj-62f5-fgmc , GO-2022-1083 , EUVD-2022-7023
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/free5gc/free5gc/issues/402 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/free5gc/free5gc | <=3.2.1 |
no fix listed |
| go | github.com/free5gc/aper | all versions |
no fix listed |
References
-
github.com
/free5gc/free5gc/issues/402
web, exploit, issue-tracking, third-party-advisory, report
- trendmicro.com /en_us/research/23/j/asn1-vulnerabilities-in-5g-cores.html
-
nvd.nist.gov
/vuln/detail/CVE-2022-43677
advisory
-
github.com
/free5gc/free5gc
package
-
pkg.go.dev
/vuln/GO-2022-1083
web
Sources
- CVE List CVE-2022-43677
- GitHub Advisory GHSA-59hj-62f5-fgmc
- NVD CVE-2022-43677
- OSV GO-2022-1083
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