ogs_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.
References
Link | Resource |
---|---|
https://research.nccgroup.com/2021/10/06/technical-advisory-open5gs-stack-buffer-overflow-during-pfcp-session-establishment-on-upf-cve-2021-41794 | Exploit Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-10-07T14:57:14
Updated: 2021-10-07T14:57:14
Reserved: 2021-09-29T00:00:00
Link: CVE-2021-41794
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-10-07T15:15:11.200
Modified: 2021-10-15T13:26:45.247
Link: CVE-2021-41794
JSON object: View
Redhat Information
No data.
CWE