CVE-2016-2570: Input Validation

Published Feb 27, 2016
·
Updated

Last updated 25 August 2025

Other sources

The Edge Side Includes (ESI) parser in Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not check buffer limits during XML parsing, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a crafted XML document, related to esi/CustomParser.cc and esi/CustomParser.h.

— Launchpad

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-3.5-13993.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-2016-2570?

The severity of CVE-2016-2570 is classified as medium due to its potential to cause denial of service.

2

How do I fix CVE-2016-2570?

To fix CVE-2016-2570, update Squid to version 3.5.15 or later, or 4.0.7 or later.

3

What versions of Squid are affected by CVE-2016-2570?

CVE-2016-2570 affects Squid versions 3.x before 3.5.15 and 4.x before 4.0.7.

4

What type of vulnerability is CVE-2016-2570?

CVE-2016-2570 is a denial of service vulnerability related to buffer limits in XML parsing.

5

Can CVE-2016-2570 be exploited remotely?

Yes, CVE-2016-2570 can be exploited remotely by sending a crafted XML document to a vulnerable Squid server.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
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