UBUNTU-CVE-2020-24606

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Source
https://ubuntu.com/security/CVE-2020-24606
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24606.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-24606
Upstream
Downstream
Related
Published
2020-08-24T18:15:00Z
Modified
2025-09-08T16:46:18Z
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
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cachepeer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peerdigest.cc mishandles EOF.

References

Affected packages

Ubuntu:16.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3@3.5.12-1ubuntu7.15?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.12-1ubuntu7.15

Affected versions

3.*

3.3.8-1ubuntu16
3.3.8-1ubuntu17
3.5.12-1ubuntu6
3.5.12-1ubuntu7
3.5.12-1ubuntu7.1
3.5.12-1ubuntu7.2
3.5.12-1ubuntu7.3
3.5.12-1ubuntu7.4
3.5.12-1ubuntu7.5
3.5.12-1ubuntu7.6
3.5.12-1ubuntu7.7
3.5.12-1ubuntu7.8
3.5.12-1ubuntu7.9
3.5.12-1ubuntu7.10
3.5.12-1ubuntu7.11
3.5.12-1ubuntu7.12
3.5.12-1ubuntu7.13
3.5.12-1ubuntu7.14

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "3.5.12-1ubuntu7.15"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "3.5.12-1ubuntu7.15"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "3.5.12-1ubuntu7.15"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "3.5.12-1ubuntu7.15"
        },
        {
            "binary_name": "squid3",
            "binary_version": "3.5.12-1ubuntu7.15"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "3.5.12-1ubuntu7.15"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.9?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.27-1ubuntu1.9

Affected versions

3.*

3.5.23-5ubuntu1
3.5.23-5ubuntu2
3.5.27-1ubuntu1
3.5.27-1ubuntu1.1
3.5.27-1ubuntu1.2
3.5.27-1ubuntu1.3
3.5.27-1ubuntu1.4
3.5.27-1ubuntu1.5
3.5.27-1ubuntu1.6
3.5.27-1ubuntu1.7
3.5.27-1ubuntu1.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "3.5.27-1ubuntu1.9"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "3.5.27-1ubuntu1.9"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "3.5.27-1ubuntu1.9"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "3.5.27-1ubuntu1.9"
        },
        {
            "binary_name": "squid3",
            "binary_version": "3.5.27-1ubuntu1.9"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "3.5.27-1ubuntu1.9"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / squid

Package

Name
squid
Purl
pkg:deb/ubuntu/squid@4.10-1ubuntu1.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.10-1ubuntu1.2

Affected versions

4.*

4.8-1ubuntu2
4.8-1ubuntu3
4.9-2ubuntu1
4.9-2ubuntu2
4.9-2ubuntu3
4.9-2ubuntu4
4.10-1ubuntu1
4.10-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "4.10-1ubuntu1.2"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "4.10-1ubuntu1.2"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "4.10-1ubuntu1.2"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "4.10-1ubuntu1.2"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "4.10-1ubuntu1.2"
        }
    ],
    "availability": "No subscription required"
}