UBUNTU-CVE-2020-15811

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Source
https://ubuntu.com/security/CVE-2020-15811
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15811.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-15811
Related
Published
2020-08-24T00:00:00Z
Modified
2020-08-24T00:00:00Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.

References

Affected packages

Ubuntu:16.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3?arch=src?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 

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

Ubuntu:18.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3?arch=src?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 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "3.5.27-1ubuntu1.9",
            "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-dbg"
        },
        {
            "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"
        }
    ]
}

Ubuntu:20.04:LTS / squid

Package

Name
squid
Purl
pkg:deb/ubuntu/squid?arch=src?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 

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