CVE-2021-42340
- Source
- https://cve.org/CVERecord?id=CVE-2021-42340
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42340.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-42340
- Aliases
- Downstream
- Related
- Published
- 2021-10-14T20:15:09.060Z
- Modified
- 2026-03-15T22:37:50.466458Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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
-
- https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784%40%3Ccommits.myfaces.apache.org%3E
- https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E
- https://security.netapp.com/advisory/ntap-20211104-0001/
- https://www.debian.org/security/2021/dsa-5009
- https://kc.mcafee.com/corporate/index?page=content&id=SB10379
- https://security.gentoo.org/glsa/202208-34
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
Affected packages
Git / github.com/apache/tomcat
Affected ranges
- Type
- GIT
- Repo
- https://github.com/apache/tomcat
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "versions": [ { "introduced": "8.5.60" }, { "fixed": "8.5.72" }, { "introduced": "9.0.40" }, { "fixed": "9.0.54" }, { "introduced": "10.0.1" }, { "fixed": "10.0.12" }, { "introduced": "0" }, { "last_affected": "10.0.0-milestone10" }, { "introduced": "0" }, { "last_affected": "10.1.0-milestone1" }, { "introduced": "0" }, { "last_affected": "10.1.0-milestone2" }, { "introduced": "0" }, { "last_affected": "10.1.0-milestone3" }, { "introduced": "0" }, { "last_affected": "10.1.0-milestone4" }, { "introduced": "0" }, { "last_affected": "10.1.0-milestone5" }, { "introduced": "0" }, { "last_affected": "11.0" }, { "introduced": "0" }, { "last_affected": "9.0" } ] }
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42340.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.2.1.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "23.1"
}
]
},
{
"events": [
{
"introduced": "8.0.0.0"
},
{
"last_affected": "8.5.0.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "20.1.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.2.1.3.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.2.1.4.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "12.2.1.4.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "19.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "20.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.0.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.0.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "21.0.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.0.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "19.0.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "14.0.4.13"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "14.1.3.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "14.1.3.14"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0.3.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0.3.8"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.0.3.7"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.1"
}
]
}
]