The pinger in Squid 3.x before 3.4.8 allows remote attackers to obtain sensitive information or cause a denial of service (crash) via a crafted (1) ICMP or (2) ICMP6 packet size.

This update for squid3 fixes the following issues :

  - Multiple issues in pinger ICMP processing.
    (CVE-2014-7141, CVE-2014-7142)

  - CVE-2016-3947: Buffer overrun issue in pinger ICMPv6     processing. (bsc#973782)

  - CVE-2016-4554: fix header smuggling issue in HTTP     Request processing (bsc#979010)

  - Fix multiple Denial of Service issues in HTTP Response     processing. (CVE-2016-2569, CVE-2016-2570,     CVE-2016-2571, CVE-2016-2572, bsc#968392, bsc#968393,     bsc#968394, bsc#968395)

  - Regression caused by the DoS fixes above (bsc#993299)

  - CVE-2016-3948: Fix denial of service in HTTP Response     processing (bsc#973783)

  - CVE-2016-4051: fixes buffer overflow in cachemgr.cgi     (bsc#976553)

  - CVE-2016-4052, CVE-2016-4053, CVE-2016-4054 :

  - fixes multiple issues in ESI processing (bsc#976556)

  - CVE-2016-4556: fixes double free vulnerability in Esi.cc     (bsc#979008)

  - CVE-2015-5400: Improper Protection of Alternate Path     (bsc#938715)

  - CVE-2014-6270: fix off-by-one in snmp subsystem     (bsc#895773)

  - Memory leak in squid3 when using external_acl     (bsc#976708)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for squid3 fixes the following issues :

  - Multiple issues in pinger ICMP processing.
    (CVE-2014-7141, CVE-2014-7142)

  - CVE-2016-3947: Buffer overrun issue in pinger ICMPv6     processing. (bsc#973782)

  - CVE-2016-4554: fix header smuggling issue in HTTP     Request processing (bsc#979010)

  - fix multiple Denial of Service issues in HTTP Response     processing. (CVE-2016-2569, CVE-2016-2570,     CVE-2016-2571, CVE-2016-2572, bsc#968392, bsc#968393,     bsc#968394, bsc#968395)

  - CVE-2016-3948: Fix denial of service in HTTP Response     processing (bsc#973783)

  - CVE-2016-4051: fixes buffer overflow in cachemgr.cgi     (bsc#976553)

  - CVE-2016-4052, CVE-2016-4053, CVE-2016-4054 :

  - fixes multiple issues in ESI processing (bsc#976556)

  - CVE-2016-4556: fixes double free vulnerability in Esi.cc     (bsc#979008)

  - CVE-2015-5400: Improper Protection of Alternate Path     (bsc#938715)

  - CVE-2014-6270: fix off-by-one in snmp subsystem     (bsc#895773)

  - Memory leak in squid3 when using external_acl     (bsc#976708)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated squid packages fix security vulnerabilities :

Due to incorrect state management, Squid before 3.3.12 is vulnerable to a denial of service attack when processing certain HTTPS requests if the SSL-Bump feature is enabled (CVE-2014-0128).

Matthew Daley discovered that Squid 3 did not properly perform input validation in request parsing. A remote attacker could send crafted Range requests to cause a denial of service (CVE-2014-3609).

Due to incorrect buffer management Squid can be caused by an attacker to write outside its allocated SNMP buffer (CVE-2014-6270).

Due to incorrect bounds checking Squid pinger binary is vulnerable to denial of service or information leak attack when processing larger than normal ICMP or ICMPv6 packets (CVE-2014-7141).

Due to incorrect input validation Squid pinger binary is vulnerable to denial of service or information leak attacks when processing ICMP or ICMPv6 packets (CVE-2014-7142).

Versions of Squid 3.4.x prior to 3.4.8 are potentially affected by by the following vulnerabilities :

  - An off-by-one overflow flaw exists within the SNMP processing component. By using a specially crafted UDP SNMP request, a remote attacker could exploit this to cause a denial of service or possibly execute arbitrary code. (CVE-2014-6270)

  - There exists an array indexing flaw in the node pinger that is triggered when parsing ICMP and ICMPv6 replies, which may allow a remote attacker to crash the pinger or obtain sensitive information. (CVE-2014-7141)

  - The node pinger has a flaw in function 'Icmp4::Recv' in file 'icmp/Icmp4.cc' that is triggered when parsing ICMP or ICMPv6 responses. A remote attacker could exploit this to crash the pinger or obtain sensitive information. (CVE-2014-7142)

According to its banner, the version of Squid running on the remote host is 3.x prior to 3.4.8. Therefore, it may be affected by the following vulnerabilities :

  - A off-by-one overflow flaw exists within the SNMP     processing component. By using a specially crafted     UDP SNMP request, a remote attacker could exploit this     to cause a denial of service or possibly execute     arbitrary code. (CVE-2014-6270)

  - There exists an array indexing flaw in the node pinger     that is triggered when parsing ICMP and ICMPv6 replies,     which may allow a remote attacker to crash the pinger or     obtain sensitive information. (CVE-2014-7141)

  - The node pinger has a flaw in function 'Icmp4::Recv' in     file 'icmp/Icmp4.cc.' that is triggered when parsing     ICMP or ICMPv6 responses. A remote attacker could     exploit this to crash the pinger or obtain sensitive     information. (CVE-2014-7142)

Note that Nessus has relied only on the version in the proxy server's banner. The patch released to address the issue does not update the version in the banner. If the patch has been applied properly, and the service has been restarted, consider this to be a false positive.

The remote host is affected by the vulnerability described in GLSA-201411-11 (Squid: Multiple vulnerabilities)

    An assertion failure in processing of SSL-Bump has been found in Squid.
      Heap based overflow is discovered when processing SNMP requests.
  Impact :

    A remote attacker could send a specially crafted request, possibly       resulting in a executing of arbitrary code or Denial of Service       condition.
  Workaround :

    There is no known workaround at this time.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2422-1 advisory.

    Sebastian Krahmer discovered that the Squid pinger incorrectly handled certain malformed ICMP packets. A     remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
93294	SUSE SLES11 Security Update : squid3 (SUSE-SU-2016:2089-1)	Nessus	SuSE Local Security Checks	high
93271	SUSE SLES11 Security Update : squid3 (SUSE-SU-2016:1996-1)	Nessus	SuSE Local Security Checks	high
82356	Mandriva Linux Security Advisory : squid (MDVSA-2015:103)	Nessus	Mandriva Local Security Checks	medium
8634	Squid 3.x < 3.4.8 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	medium
79742	Squid 3.x < 3.4.8 Multiple Vulnerabilities	Nessus	Firewalls	medium
79609	GLSA-201411-11 : Squid: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	medium
79576	Ubuntu 14.04 LTS : Squid vulnerabilities (USN-2422-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2014-7142

high

Tenable Plugins

high

high

medium

medium

medium

medium

high