UBUNTU-CVE-2021-32675

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Source

https://ubuntu.com/security/CVE-2021-32675

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-32675.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-32675

Related

Published

2021-10-04T18:15:00Z

Modified

2024-10-15T14:08:09Z

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

Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate using client side certificates.

References

Affected packages

Ubuntu:Pro:14.04:LTS / redis

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:2.8.4-2ubuntu0.2+esm2

Affected versions

2:2.*

2:2.6.13-1

2:2.6.16-3

2:2.8.0-1

2:2.8.2-1

2:2.8.4-2

2:2.8.4-2ubuntu0.2

2:2.8.4-2ubuntu0.2+esm1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2:2.8.4-2ubuntu0.2+esm2",
            "binary_name": "redis-server"
        },
        {
            "binary_version": "2:2.8.4-2ubuntu0.2+esm2",
            "binary_name": "redis-server-dbgsym"
        },
        {
            "binary_version": "2:2.8.4-2ubuntu0.2+esm2",
            "binary_name": "redis-tools"
        },
        {
            "binary_version": "2:2.8.4-2ubuntu0.2+esm2",
            "binary_name": "redis-tools-dbgsym"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / redis

Package

Name: redis
Purl: pkg:deb/ubuntu/redis?arch=src?distro=esm-apps/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:3.0.6-1ubuntu0.4+esm1

Affected versions

2:3.*

2:3.0.3-3

2:3.0.5-1

2:3.0.5-2

2:3.0.5-3

2:3.0.5-4

2:3.0.6-1

2:3.0.6-1ubuntu0.2

2:3.0.6-1ubuntu0.3

2:3.0.6-1ubuntu0.4

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2:3.0.6-1ubuntu0.4+esm1",
            "binary_name": "redis-sentinel"
        },
        {
            "binary_version": "2:3.0.6-1ubuntu0.4+esm1",
            "binary_name": "redis-server"
        },
        {
            "binary_version": "2:3.0.6-1ubuntu0.4+esm1",
            "binary_name": "redis-server-dbgsym"
        },
        {
            "binary_version": "2:3.0.6-1ubuntu0.4+esm1",
            "binary_name": "redis-tools"
        },
        {
            "binary_version": "2:3.0.6-1ubuntu0.4+esm1",
            "binary_name": "redis-tools-dbgsym"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / redis

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5:4.0.9-1ubuntu0.2+esm3

Affected versions

4:4.*

4:4.0.1-7

4:4.0.2-6

4:4.0.2-9

5:4.*

5:4.0.5-1

5:4.0.6-1

5:4.0.6-2

5:4.0.7-1

5:4.0.8-1

5:4.0.8-2

5:4.0.9-1

5:4.0.9-1ubuntu0.1

5:4.0.9-1ubuntu0.2

5:4.0.9-1ubuntu0.2+esm2

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5:4.0.9-1ubuntu0.2+esm3",
            "binary_name": "redis"
        },
        {
            "binary_version": "5:4.0.9-1ubuntu0.2+esm3",
            "binary_name": "redis-sentinel"
        },
        {
            "binary_version": "5:4.0.9-1ubuntu0.2+esm3",
            "binary_name": "redis-server"
        },
        {
            "binary_version": "5:4.0.9-1ubuntu0.2+esm3",
            "binary_name": "redis-tools"
        },
        {
            "binary_version": "5:4.0.9-1ubuntu0.2+esm3",
            "binary_name": "redis-tools-dbgsym"
        }
    ]
}

Ubuntu:20.04:LTS / redis

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5:5.*

5:5.0.5-2build1

5:5.0.6-1

5:5.0.7-1

5:5.0.7-2

5:5.0.7-2ubuntu0.1

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:20.04:LTS / redis

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5:5.0.7-2ubuntu0.1+esm1

Affected versions

5:5.*

5:5.0.5-2build1

5:5.0.6-1

5:5.0.7-1

5:5.0.7-2

5:5.0.7-2ubuntu0.1~esm1

5:5.0.7-2ubuntu0.1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5:5.0.7-2ubuntu0.1+esm1",
            "binary_name": "redis"
        },
        {
            "binary_version": "5:5.0.7-2ubuntu0.1+esm1",
            "binary_name": "redis-sentinel"
        },
        {
            "binary_version": "5:5.0.7-2ubuntu0.1+esm1",
            "binary_name": "redis-server"
        },
        {
            "binary_version": "5:5.0.7-2ubuntu0.1+esm1",
            "binary_name": "redis-tools"
        },
        {
            "binary_version": "5:5.0.7-2ubuntu0.1+esm1",
            "binary_name": "redis-tools-dbgsym"
        }
    ]
}

Ubuntu:22.04:LTS / redis

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5:6.0.16-1

Affected versions

5:6.*

5:6.0.15-1

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5:6.0.16-1",
            "binary_name": "redis"
        },
        {
            "binary_version": "5:6.0.16-1",
            "binary_name": "redis-sentinel"
        },
        {
            "binary_version": "5:6.0.16-1",
            "binary_name": "redis-server"
        },
        {
            "binary_version": "5:6.0.16-1",
            "binary_name": "redis-tools"
        },
        {
            "binary_version": "5:6.0.16-1",
            "binary_name": "redis-tools-dbgsym"
        }
    ]
}