UBUNTU-CVE-2021-43980

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Source
https://ubuntu.com/security/CVE-2021-43980
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43980.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-43980
Upstream
Published
2022-09-28T14:15:00Z
Modified
2026-07-15T19:45:13Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.

References

Affected packages

Ubuntu:Pro:18.04:LTS / tomcat8

Package

Name
tomcat8
Purl
pkg:deb/ubuntu/tomcat8?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.5.21-1ubuntu1
8.5.29-1
8.5.30-1
8.5.30-1ubuntu1
8.5.30-1ubuntu1.2
8.5.30-1ubuntu1.3
8.5.30-1ubuntu1.4
8.5.39-1ubuntu1~18.04.1
8.5.39-1ubuntu1~18.04.2
8.5.39-1ubuntu1~18.04.3
8.5.39-1ubuntu1~18.04.3+esm1
8.5.39-1ubuntu1~18.04.3+esm2
8.5.39-1ubuntu1~18.04.3+esm3
8.5.39-1ubuntu1~18.04.3+esm4
8.5.39-1ubuntu1~18.04.3+esm5
8.5.39-1ubuntu1~18.04.3+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libtomcat8-embed-java",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "libtomcat8-java",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "tomcat8",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "tomcat8-admin",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "tomcat8-common",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "tomcat8-docs",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "tomcat8-examples",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        },
        {
            "binary_name": "tomcat8-user",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43980.json"

Ubuntu:Pro:18.04:LTS / tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

9.*
9.0.16-3~18.04.1
9.0.16-3ubuntu0.18.04.1
9.0.16-3ubuntu0.18.04.2
9.0.16-3ubuntu0.18.04.2+esm1
9.0.16-3ubuntu0.18.04.2+esm2
9.0.16-3ubuntu0.18.04.2+esm3
9.0.16-3ubuntu0.18.04.2+esm4
9.0.16-3ubuntu0.18.04.2+esm5
9.0.16-3ubuntu0.18.04.2+esm6
9.0.16-3ubuntu0.18.04.2+esm7
9.0.16-3ubuntu0.18.04.2+esm8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43980.json"

Ubuntu:Pro:20.04:LTS / tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

9.*
9.0.24-1
9.0.27-1
9.0.31-1
9.0.31-1ubuntu0.1
9.0.31-1ubuntu0.2
9.0.31-1ubuntu0.3
9.0.31-1ubuntu0.4
9.0.31-1ubuntu0.5
9.0.31-1ubuntu0.6
9.0.31-1ubuntu0.7
9.0.31-1ubuntu0.8
9.0.31-1ubuntu0.9
9.0.31-1ubuntu0.9+esm1
9.0.31-1ubuntu0.9+esm2
9.0.31-1ubuntu0.9+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43980.json"

Ubuntu:Pro:22.04:LTS / tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

9.*
9.0.43-3
9.0.54-1
9.0.55-1
9.0.58-1
9.0.58-1ubuntu0.1
9.0.58-1ubuntu0.1+esm1
9.0.58-1ubuntu0.1+esm2
9.0.58-1ubuntu0.1+esm3
9.0.58-1ubuntu0.1+esm4
9.0.58-1ubuntu0.2
9.0.58-1ubuntu0.2+esm1
9.0.58-1ubuntu0.2+esm2
9.0.58-1ubuntu0.2+esm3
9.0.58-1ubuntu0.2+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43980.json"