Resource exhaustion in Redhat Enterprise_linux
CVE-2021-3690
A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.013 (67.2th 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
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
- Redhat Fuse — versions 1.0
- Redhat Integration_camel_k
- Redhat Integration_camel_quarkus
- Redhat Jboss_enterprise_application_platform — versions 7.3, 7.4
- Redhat Openshift_application_runtimes
- Redhat Single_sign-on
- Redhat Undertow
- N/a Undertow — versions Fixed in 2.2.10.Final, 2.0.40.Final
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Exploit, x_refsource_MISC, Mitigation, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3690?
- CVE-2021-3690 is a high-severity vulnerability in Redhat Enterprise_linux, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-08-23.
- How severe is CVE-2021-3690?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3690 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.