UBUNTU-CVE-2019-18676

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Source
https://ubuntu.com/security/CVE-2019-18676
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18676.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-18676
Upstream
Downstream
Related
Published
2019-11-26T17:15:00Z
Modified
2025-09-08T16:45:39Z
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
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme.

References

Affected packages

Ubuntu:16.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3@3.5.12-1ubuntu7.12?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.12-1ubuntu7.12

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "3.5.12-1ubuntu7.12"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "3.5.12-1ubuntu7.12"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "3.5.12-1ubuntu7.12"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "3.5.12-1ubuntu7.12"
        },
        {
            "binary_name": "squid3",
            "binary_version": "3.5.12-1ubuntu7.12"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "3.5.12-1ubuntu7.12"
        }
    ]
}

Ubuntu:18.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.7?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.27-1ubuntu1.7

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "3.5.27-1ubuntu1.7"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "3.5.27-1ubuntu1.7"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "3.5.27-1ubuntu1.7"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "3.5.27-1ubuntu1.7"
        },
        {
            "binary_name": "squid3",
            "binary_version": "3.5.27-1ubuntu1.7"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "3.5.27-1ubuntu1.7"
        }
    ]
}

Ubuntu:20.04:LTS / squid

Package

Name
squid
Purl
pkg:deb/ubuntu/squid@4.9-2ubuntu1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.9-2ubuntu1

Affected versions

4.*

4.8-1ubuntu2
4.8-1ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "4.9-2ubuntu1"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "4.9-2ubuntu1"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "4.9-2ubuntu1"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "4.9-2ubuntu1"
        },
        {
            "binary_name": "squid3",
            "binary_version": "4.9-2ubuntu1"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "4.9-2ubuntu1"
        }
    ]
}