Ubuntu.comUB:CVE-2021-42340CVE-2021-42340
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.019 Low
EPSS
Percentile
88.3%
The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5,
10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a
memory leak. The object introduced to collect metrics for HTTP upgrade
connections was not released for WebSocket connections once the connection
was closed. This created a memory leak that, over time, could lead to a
denial of service via an OutOfMemoryError.
References
github.com/apache/tomcat/commit/80f1438ec45e77a07b96419808971838d259eb47 (9.0.54)
github.com/apache/tomcat/commit/d27535bdee95d252418201eb21e9d29476aa6b6a (8.5.72)
launchpad.net/bugs/cve/CVE-2021-42340
lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2021-42340
security-tracker.debian.org/tracker/CVE-2021-42340
www.cve.org/CVERecord?id=CVE-2021-42340
www.openwall.com/lists/oss-security/2021/10/14/1
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.019 Low
EPSS
Percentile
88.3%