CVE-2021-41794

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Summary

CVECVE-2021-41794
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-10-07 15:15:00 UTC
Updated2021-10-15 13:26:00 UTC
Descriptionogs_fqdn_parse in Open5GS 1.0.0 through 2.3.3 inappropriately trusts a client-supplied length value, leading to a buffer overflow. The attacker can send a PFCP Session Establishment Request with "internet" as the PDI Network Instance. The first character is interpreted as a length value to be used in a memcpy call. The destination buffer is only 100 bytes long on the stack. Then, 'i' gets interpreted as 105 bytes to copy from the source buffer to the destination buffer.

Risk And Classification

Problem Types: CWE-120

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Open5gs Open5gs All All All All

References

ReferenceSourceLinkTags
Technical Advisory – Open5GS Stack Buffer Overflow During PFCP Session Establishment on UPF (CVE-2021-41794) – NCC Group Research MISC research.nccgroup.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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