VulnerabilityModified
CVE-2021-3690
A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion.
HIGH 7.5EPSS 1.68%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.68% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-401
- Affected
- redhat/fuse · redhat/integration camel k · redhat/integration camel quarkus · redhat/jboss enterprise application platform · redhat/openshift application runtimes · redhat/single sign-on · redhat/undertow
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2021-3690Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1991299Issue Tracking, Vendor Advisory
- https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877Patch, Third Party Advisory
- https://issues.redhat.com/browse/UNDERTOW-1935Exploit, Issue Tracking, Mitigation, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2021-3690Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1991299Issue Tracking, Vendor Advisory
- https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877Patch, Third Party Advisory
- https://issues.redhat.com/browse/UNDERTOW-1935Exploit, Issue Tracking, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.