CVE-2016-3947

Gentoo Linux Security Advisory 201607-01

Severity Score

8.2

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Heap-based buffer overflow in the Icmp6::Recv function in icmp/Icmp6.cc in the pinger utility in Squid before 3.5.16 and 4.x before 4.0.8 allows remote servers to cause a denial of service (performance degradation or transition failures) or write sensitive information to log files via an ICMPv6 packet.

Desbordamiento de buffer basado en memoria dinámica en la función Icmp6::Recv en icmp/Icmp6.cc en la utilidad pinger en Squid en versiones anteriores a 3.5.16 y 4.x en versiones anteriores a 4.0.8 permite a servidores remotos provocar una denegación de servicio (degradación de rendimiento o fallos de transición) o escribir información sensible en archivos de registro a través de un paquete ICMPv6.

Yuriy M. Kaminskiy discovered that the Squid pinger utility incorrectly handled certain ICMPv6 packets. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly cause Squid to leak information into log files. Yuriy M. Kaminskiy discovered that the Squid cachemgr.cgi tool incorrectly handled certain crafted data. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-04-01 CVE Reserved
2016-04-07 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 (12)

URL	Tag	Source
http://www.securitytracker.com/id/1035457	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10495.patch	2016-11-28
http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11839.patch	2016-11-28
http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12694.patch	2016-11-28
http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13232.patch	2016-11-28
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14015.patch	2016-11-28

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html	2016-11-28
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html	2016-11-28
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html	2016-11-28
http://www.squid-cache.org/Advisories/SQUID-2016_3.txt	2016-11-28
http://www.ubuntu.com/usn/USN-2995-1	2016-11-28
https://security.gentoo.org/glsa/201607-01	2016-11-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				<= 3.5.15 Search vendor "Squid-cache" for product "Squid" and version " <= 3.5.15"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.1 Search vendor "Squid-cache" for product "Squid" and version "4.0.1"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.2 Search vendor "Squid-cache" for product "Squid" and version "4.0.2"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.3 Search vendor "Squid-cache" for product "Squid" and version "4.0.3"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.4 Search vendor "Squid-cache" for product "Squid" and version "4.0.4"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.5 Search vendor "Squid-cache" for product "Squid" and version "4.0.5"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.6 Search vendor "Squid-cache" for product "Squid" and version "4.0.6"		-		Affected
Squid-cache Search vendor "Squid-cache"		Squid Search vendor "Squid-cache" for product "Squid"				4.0.7 Search vendor "Squid-cache" for product "Squid" and version "4.0.7"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected