UBUNTU-CVE-2021-20235

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Source
https://ubuntu.com/security/CVE-2021-20235
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20235.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-20235
Related
Published
2021-04-01T14:15:00Z
Modified
2024-11-20T12:23:42Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality.

References

Affected packages

Ubuntu:Pro:14.04:LTS / zeromq3

Package

Name
zeromq3
Purl
pkg:deb/ubuntu/zeromq3?arch=src?distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.4+dfsg-2ubuntu0.1+esm2

Affected versions

3.*

3.2.3+dfsg-2
3.2.4+dfsg-1
3.2.4+dfsg-2
3.2.4+dfsg-3
3.2.4+dfsg-4

4.*

4.0.3+dfsg-1
4.0.4+dfsg-2
4.0.4+dfsg-2ubuntu0.1
4.0.4+dfsg-2ubuntu0.1+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2",
            "binary_name": "libzmq3"
        },
        {
            "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2",
            "binary_name": "libzmq3-dbg"
        },
        {
            "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2",
            "binary_name": "libzmq3-dbgsym"
        },
        {
            "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2",
            "binary_name": "libzmq3-dev"
        },
        {
            "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2",
            "binary_name": "libzmq3-dev-dbgsym"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / zeromq3

Package

Name
zeromq3
Purl
pkg:deb/ubuntu/zeromq3?arch=src?distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.2.5-1ubuntu0.2+esm2

Affected versions

4.*

4.2.1-4ubuntu1
4.2.2-1ubuntu2
4.2.3-1
4.2.3-1build1
4.2.5-1
4.2.5-1ubuntu0.1
4.2.5-1ubuntu0.2
4.2.5-1ubuntu0.2+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "4.2.5-1ubuntu0.2+esm2",
            "binary_name": "libzmq3-dev"
        },
        {
            "binary_version": "4.2.5-1ubuntu0.2+esm2",
            "binary_name": "libzmq5"
        },
        {
            "binary_version": "4.2.5-1ubuntu0.2+esm2",
            "binary_name": "libzmq5-dbgsym"
        }
    ]
}

Ubuntu:20.04:LTS / zeromq3

Package

Name
zeromq3
Purl
pkg:deb/ubuntu/zeromq3?arch=src?distro=focal

Affected ranges

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

Affected versions

4.*

4.3.2-1
4.3.2-2
4.3.2-2ubuntu1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:20.04:LTS / zeromq3

Package

Name
zeromq3
Purl
pkg:deb/ubuntu/zeromq3?arch=src?distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3.2-2ubuntu1.20.04.1~esm2

Affected versions

4.*

4.3.2-1
4.3.2-2
4.3.2-2ubuntu1
4.3.2-2ubuntu1.20.04.1~esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "4.3.2-2ubuntu1.20.04.1~esm2",
            "binary_name": "libzmq3-dev"
        },
        {
            "binary_version": "4.3.2-2ubuntu1.20.04.1~esm2",
            "binary_name": "libzmq5"
        },
        {
            "binary_version": "4.3.2-2ubuntu1.20.04.1~esm2",
            "binary_name": "libzmq5-dbgsym"
        }
    ]
}

Ubuntu:22.04:LTS / zeromq3

Package

Name
zeromq3
Purl
pkg:deb/ubuntu/zeromq3?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3.4-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "4.3.4-1",
            "binary_name": "libzmq3-dev"
        },
        {
            "binary_version": "4.3.4-1",
            "binary_name": "libzmq5"
        },
        {
            "binary_version": "4.3.4-1",
            "binary_name": "libzmq5-dbgsym"
        }
    ]
}