CVE-2013-4115

squid: buffer overflow when processing overly long DNS names (SQUID-2013:2)

Severity Score

9.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3.3 through 3.3.6 allows remote attackers to cause a denial of service (memory corruption and server termination) via a long name in a DNS lookup request.

Desbordamiento de búfer en la función idnsALookup en dns_internal.cc en Squid v3.2 hasta v3.2.11 y v3.3 hasta v3.3.6, lo que permite a atacantes remotos provocar una denegación de servicio (corrupción de memoria o finalización de servicio) a través de un nombre largo en una petición “DNS lookup”.

A buffer overflow flaw was found in Squid's DNS lookup module. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid.

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. A flaw was found in the way Squid handled malformed HTTP Range headers. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid. A buffer overflow flaw was found in Squid's DNS lookup module. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

High

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-06-12 CVE Reserved
2013-07-25 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (20)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2013/07/11/8	Mailing List
http://www.securityfocus.com/bid/61111	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/85564	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9200.patch	2018-10-30
http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10487.patch	2018-10-30
http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11823.patch	2018-10-30
http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12587.patch	2018-10-30

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html	2018-10-30
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2013-09/msg00025.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2013-09/msg00030.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2013-09/msg00032.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2013-09/msg00033.html	2018-10-30
http://secunia.com/advisories/54076	2018-10-30
http://secunia.com/advisories/54834	2018-10-30
http://secunia.com/advisories/54839	2018-10-30
http://www.squid-cache.org/Advisories/SQUID-2013_2.txt	2018-10-30
https://access.redhat.com/security/cve/CVE-2013-4115	2014-09-03
https://bugzilla.redhat.com/show_bug.cgi?id=983653	2014-09-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				11.4 Search vendor "Opensuse" for product "Opensuse" and version "11.4"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.2 Search vendor "Opensuse" for product "Opensuse" and version "12.2"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.3 Search vendor "Opensuse" for product "Opensuse" and version "12.3"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.1 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.1"		-		Safe
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.2 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.2"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.3 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.3"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.4 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.4"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.5 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.5"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.6 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.6"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.7 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.7"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.8 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.8"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.9 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.9"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.10 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.10"		-		Safe
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.2.0.11 Search vendor "Squid-cache" for product "Squid" and version "3.2.0.11"		-		Safe
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.0 Search vendor "Squid-cache" for product "Squid" and version "3.3.0"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.0.2 Search vendor "Squid-cache" for product "Squid" and version "3.3.0.2"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.0.3 Search vendor "Squid-cache" for product "Squid" and version "3.3.0.3"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.1 Search vendor "Squid-cache" for product "Squid" and version "3.3.1"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.2 Search vendor "Squid-cache" for product "Squid" and version "3.3.2"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.3 Search vendor "Squid-cache" for product "Squid" and version "3.3.3"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.4 Search vendor "Squid-cache" for product "Squid" and version "3.3.4"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.5 Search vendor "Squid-cache" for product "Squid" and version "3.3.5"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				3.3.6 Search vendor "Squid-cache" for product "Squid" and version "3.3.6"		-		Affected