CVE-2016-2571: Input Validation

Published Feb 27, 2016
·
Updated

http.cc in Squid 3.x before 3.5.15 and 4.x before 4.0.7 proceeds with the storage of certain data after a response-parsing failure, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a malformed response.

Affected Software

144 affected componentsFixes available
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0
Squid-Cache Squid=3.0-rc4
Squid-Cache Squid=3.0.stable1
Squid-Cache Squid=3.0.stable2
Squid-Cache Squid=3.0.stable3
Squid-Cache Squid=3.0.stable4
Squid-Cache Squid=3.0.stable5
Squid-Cache Squid=3.0.stable6
Squid-Cache Squid=3.0.stable7
Squid-Cache Squid=3.0.stable8
Squid-Cache Squid=3.0.stable9
Squid-Cache Squid=3.0.stable10
Squid-Cache Squid=3.0.stable11
Squid-Cache Squid=3.0.stable11-rc1
Squid-Cache Squid=3.0.stable12
Squid-Cache Squid=3.0.stable13
Squid-Cache Squid=3.0.stable14
Squid-Cache Squid=3.0.stable15
Squid-Cache Squid=3.0.stable16
Squid-Cache Squid=3.0.stable16-rc1
Squid-Cache Squid=3.0.stable17
Squid-Cache Squid=3.0.stable18
Squid-Cache Squid=3.0.stable19
Squid-Cache Squid=3.0.stable20
Squid-Cache Squid=3.0.stable21
Squid-Cache Squid=3.0.stable22
Squid-Cache Squid=3.0.stable23
Squid-Cache Squid=3.0.stable24
Squid-Cache Squid=3.0.stable25
Squid-Cache Squid=3.1
Squid-Cache Squid=3.1.0.1
Squid-Cache Squid=3.1.0.2
Squid-Cache Squid=3.1.0.3
Squid-Cache Squid=3.1.0.4
Squid-Cache Squid=3.1.0.5
Squid-Cache Squid=3.1.0.6
Squid-Cache Squid=3.1.0.7
Squid-Cache Squid=3.1.0.8
Squid-Cache Squid=3.1.0.9
Squid-Cache Squid=3.1.0.10
Squid-Cache Squid=3.1.0.11
Squid-Cache Squid=3.1.0.12
Squid-Cache Squid=3.1.0.13
Squid-Cache Squid=3.1.0.14
Squid-Cache Squid=3.1.0.15
Squid-Cache Squid=3.1.0.16
Squid-Cache Squid=3.1.0.17
Squid-Cache Squid=3.1.0.18
Squid-Cache Squid=3.1.1
Squid-Cache Squid=3.1.2
Squid-Cache Squid=3.1.3
Squid-Cache Squid=3.1.4
Squid-Cache Squid=3.1.5
Squid-Cache Squid=3.1.5.1
Squid-Cache Squid=3.1.6
Squid-Cache Squid=3.1.7
Squid-Cache Squid=3.1.8
Squid-Cache Squid=3.1.9
Squid-Cache Squid=3.1.10
Squid-Cache Squid=3.1.11
Squid-Cache Squid=3.1.12
Squid-Cache Squid=3.1.13
Squid-Cache Squid=3.1.14
Squid-Cache Squid=3.1.15
Squid-Cache Squid=3.2.0.1
Squid-Cache Squid=3.2.0.2
Squid-Cache Squid=3.2.0.3
Squid-Cache Squid=3.2.0.4
Squid-Cache Squid=3.2.0.5
Squid-Cache Squid=3.2.0.6
Squid-Cache Squid=3.2.0.7
Squid-Cache Squid=3.2.0.8
Squid-Cache Squid=3.2.0.9
Squid-Cache Squid=3.2.0.10
Squid-Cache Squid=3.2.0.11
Squid-Cache Squid=3.2.0.12
Squid-Cache Squid=3.2.0.13
Squid-Cache Squid=3.2.0.14
Squid-Cache Squid=3.2.0.15
Squid-Cache Squid=3.2.0.16
Squid-Cache Squid=3.2.0.17
Squid-Cache Squid=3.2.0.18
Squid-Cache Squid=3.2.0.19
Squid-Cache Squid=3.2.1
Squid-Cache Squid=3.2.2
Squid-Cache Squid=3.2.3
Squid-Cache Squid=3.2.4
Squid-Cache Squid=3.2.5
Squid-Cache Squid=3.2.6
Squid-Cache Squid=3.2.7
Squid-Cache Squid=3.2.8
Squid-Cache Squid=3.2.9
Squid-Cache Squid=3.2.10
Squid-Cache Squid=3.2.11
Squid-Cache Squid=3.2.12
Squid-Cache Squid=3.2.13
Squid-Cache Squid=3.3.0
Squid-Cache Squid=3.3.0.2
Squid-Cache Squid=3.3.0.3
Squid-Cache Squid=3.3.1
Squid-Cache Squid=3.3.2
Squid-Cache Squid=3.3.3
Squid-Cache Squid=3.3.4
Squid-Cache Squid=3.3.5
Squid-Cache Squid=3.3.6
Squid-Cache Squid=3.3.7
Squid-Cache Squid=3.3.8
Squid-Cache Squid=3.3.9
Squid-Cache Squid=3.3.10
Squid-Cache Squid=3.3.11
Squid-Cache Squid=3.3.12
Squid-Cache Squid=3.3.13
Squid-Cache Squid=3.4.0.1
Squid-Cache Squid=3.4.0.2
Squid-Cache Squid=3.4.0.3
Squid-Cache Squid=3.4.1
Squid-Cache Squid=3.4.2
Squid-Cache Squid=3.4.3
Squid-Cache Squid=3.4.4
Squid-Cache Squid=3.4.8
Squid-Cache Squid=3.4.9
Squid-Cache Squid=3.4.10
Squid-Cache Squid=3.4.11
Squid-Cache Squid=3.4.12
Squid-Cache Squid=3.4.13
Squid-Cache Squid=3.5.0.1
Squid-Cache Squid=3.5.0.2
Squid-Cache Squid=3.5.0.3
Squid-Cache Squid=3.5.0.4
Squid-Cache Squid=3.5.1
Squid-Cache Squid=4.0.1
Squid-Cache Squid=4.0.2
Squid-Cache Squid=4.0.3
Squid-Cache Squid=4.0.4
Squid-Cache Squid=4.0.5
Squid-Cache Squid=4.0.6
debian/squid
4.13-10+deb11u34.13-10+deb11u65.7-2+deb12u55.7-2+deb12u46.13-2+deb13u17.4-1

Remediation

Patch Available

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13990.patch

Patch Available

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13991.patch

Patch Available

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13993.patch

Patch Available

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13998.patch

Event History

Feb 27, 2016
CVE Published
via MITRE·02:00 AM
Data Sourced
via MITRE·02:00 AM
Description
Data Sourced
via NVD·05:59 AM
DescriptionSeverityWeaknessAffected Software
Jan 11, 2024
Data Sourced
via Launchpad·10:16 PM
Description
Feb 19, 2026
Data Sourced
via Ubuntu·04:46 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·04:46 PM
DescriptionAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2016-2571?

CVE-2016-2571 is considered a high severity vulnerability due to its potential to cause denial of service.

2

How do I fix CVE-2016-2571?

To fix CVE-2016-2571, upgrade to Squid version 3.5.15 or later, or 4.0.7 or later.

3

What causes the CVE-2016-2571 vulnerability?

CVE-2016-2571 is caused by the mishandling of malformed HTTP responses in certain Squid versions.

4

Is CVE-2016-2571 easy to exploit?

Yes, CVE-2016-2571 can be exploited easily by sending specially crafted HTTP responses.

5

Does CVE-2016-2571 affect all versions of Squid?

CVE-2016-2571 affects Squid versions prior to 3.5.15 and 4.0.7.

Company

Resources

Contact

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