CVE-2022-43677
free5GC vulnerable to malformed NGAP message crashing the AMF and NGAP decoders
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2022-43677- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2022-43677- Updated
- 2026-11-02
EUVDEUVD-2022-7023 No score
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.
- Record
EUVD-2022-7023- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-59hj-62f5-fgmc
free5GC vulnerable to malformed NGAP message crashing the AMF and NGAP decoders
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.
- Record
GHSA-59hj-62f5-fgmc- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-59hj-62f5-fgmc
free5GC vulnerable to malformed NGAP message crashing the AMF and NGAP decoders
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.
- Record
GHSA-59hj-62f5-fgmc- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2022-43677- Updated
- 2026-11-02
OSVGO-2022-1083 No score
Panic on malformed messages in github.com/free5gc/aper
A malformed message can crash the free5gc/amf and free5gc/ngap decoders via an index-out-of-range panic in aper.GetBitString.
- Record
GO-2022-1083- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/free5gc/free5gcGo |
through 3.2.1 | None known |
github.com/free5gc/aperGo |
All versions | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-43677 is a medium vulnerability (CVSS 5.5) in Free5gc, published October 24, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.76%, the 55th percentile. No source names a fixed version.
References
github.com/free5gc/free5gc/issues/402
trendmicro.com/en_us/research/23/j/asn1-vulnerabilities-in-5g-cores.html
nvd.nist.gov/vuln/detail/CVE-2022-43677
pkg.go.dev/vuln/GO-2022-1083