CVE-2021-41794
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOpen5gs
PublishedOct 7, 2021
First seenOct 7, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| open5gs open5gs | 1.0.0 ≤ v ≤ 2.3.3 | — |
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