Vulnerability in Open5gs
CVE-2022-39063
When Open5GS UPF receives a PFCP Session Establishment Request, it stores related values for building the PFCP Session Establishment Response. Once UPF receives a request, it gets the f_teid_len from incoming message, and then uses it to copy data from incoming message to struct f_teid without checking the maximum length. If the pdi.local_f_teid.len exceeds the maximum length of the struct of f_teid, the memcpy() overwrites the fields (e.g., f_teid_len) after f_teid in the pdr struct. After parsing the request, the UPF starts to build a response. The f_teid_len with its overwritten value is used as a length for memcpy(). A segmentation fault occurs, as a result of a memcpy(), if this overwritten value is large enough.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (66.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.000
Affected products
- Open5gs — versions <2.4.9
Weakness classification (CWE)
References
- www.synopsys.com/blogs/software-security/cyrc-advisory-open5gs/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-39063?
- CVE-2022-39063 is a high-severity vulnerability in Open5gs, classified under CWE-676. CVSS score: 7.5/10. Published 2022-09-16.
- How severe is CVE-2022-39063?
- High severity. CVSS v3 base score is 7.5 out of 10.