UBUNTU-CVE-2021-33833

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Source
https://ubuntu.com/security/CVE-2021-33833
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33833.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-33833
Upstream
Downstream
Related
Published
2021-06-09T08:00:00Z
Modified
2025-09-08T16:47:13Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

ConnMan (aka Connection Manager) 1.30 through 1.39 has a stack-based buffer overflow in uncompress in dnsproxy.c via NAME, RDATA, or RDLENGTH (for A or AAAA).

References

Affected packages

Ubuntu:Pro:18.04:LTS / connman

Package

Name
connman
Purl
pkg:deb/ubuntu/connman@1.35-6ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.35-6ubuntu0.1~esm1

Affected versions

1.*

1.35-1
1.35-2
1.35-6

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "1.35-6ubuntu0.1~esm1",
            "binary_name": "connman"
        },
        {
            "binary_version": "1.35-6ubuntu0.1~esm1",
            "binary_name": "connman-dev"
        },
        {
            "binary_version": "1.35-6ubuntu0.1~esm1",
            "binary_name": "connman-vpn"
        }
    ]
}

Ubuntu:20.04:LTS / connman

Package

Name
connman
Purl
pkg:deb/ubuntu/connman@1.36-2ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.36-2ubuntu0.1

Affected versions

1.*

1.36-2build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.36-2ubuntu0.1",
            "binary_name": "connman"
        },
        {
            "binary_version": "1.36-2ubuntu0.1",
            "binary_name": "connman-dev"
        },
        {
            "binary_version": "1.36-2ubuntu0.1",
            "binary_name": "connman-vpn"
        }
    ]
}