Resource exhaustion in Open62541
CVE-2022-25761
The package open62541/open62541 before 1.2.5, from 1.3-rc1 and before 1.3.1 are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.
EPSS: 0.011 (63.0th percentile) — read the EPSS interpretation.
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.
Affected products
- Open62541 — versions 1.3
- Fedoraproject Fedora — versions 37
- N/a Open62541/open62541 — versions unspecified, 1.3-rc1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- report@snyk.io (Patch, Third Party Advisory)
- report@snyk.io (Patch, Third Party Advisory)
- report@snyk.io (Patch, Third Party Advisory)
- report@snyk.io (Third Party Advisory, Release Notes)
- report@snyk.io (Third Party Advisory, Release Notes)
- report@snyk.io (vendor-advisory)
Frequently asked questions
- What is CVE-2022-25761?
- CVE-2022-25761 is a high-severity vulnerability in Open62541, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-08-23.
- How severe is CVE-2022-25761?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-25761 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.