According to the versions of the squid packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not     properly append data to String objects, which allows     remote servers to cause a denial of service (assertion     failure and daemon exit) via a long string, as     demonstrated by a crafted HTTP Vary     header.(CVE-2016-2569)

  - 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.(CVE-2016-2570)

  - 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.(CVE-2016-2571)

  - http.cc in Squid 4.x before 4.0.7 relies on the HTTP     status code 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.(CVE-2016-2572)

  - Squid 3.x before 3.5.16 and 4.x before 4.0.8 improperly     perform bounds checking, which allows remote attackers     to cause a denial of service via a crafted HTTP     response, related to Vary headers.(CVE-2016-3948)

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

The remote host is affected by the vulnerability described in GLSA-201607-01 (Squid: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Squid. Please review       the CVE identifiers referenced below for details.
  Impact :

    An attacker can possibly execute arbitrary code or create a Denial of       Service condition.
  Workaround :

    There is no known workaround at this time.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2016-905:02 advisory.

    Squid is a high-performance proxy caching server for Web clients,     supporting FTP, gopher, and HTTP data objects. Unlike traditional     caching software, Squid handles all requests in a single,     non-blocking, I/O-driven process. Squid keeps meta data and especially     hot objects cached in RAM, caches DNS lookups, supports non-blocking     DNS lookups, and implements negative caching of failed requests.
    Squid consists of a main server program squid, a Domain Name System     lookup program (dnsserver), a program for retrieving FTP data     (ftpget), and some management and client tools.
    Security issues fixed with this release:
    CVE-2016-2569     Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not properly append     data to String objects, which allows remote servers to cause a denial     of service (assertion failure and daemon exit) via a long string, as     demonstrated by a crafted HTTP Vary header.
    CVE-2016-2570     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.
    CVE-2016-2571     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.
    CVE-2016-2572     http.cc in Squid 4.x before 4.0.7 relies on the HTTP status code 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.
    CVE-2016-3948     Squid 3.x before 3.5.16 and 4.x before 4.0.8 improperly perform bounds     checking, which allows remote attackers to cause a denial of service     via a crafted HTTP response, related to Vary headers.
    The following packages have been upgraded to a newer upstream version: squid (3.5.20).
    Additional Changes:

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

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

Squid security advisory 2016:3 reports :

Due to a buffer overrun Squid pinger binary is vulnerable to denial of service or information leak attack when processing ICMPv6 packets.

This bug also permits the server response to manipulate other ICMP and ICMPv6 queries processing to cause information leak.

This bug allows any remote server to perform a denial of service attack on the Squid service by crashing the pinger. This may affect Squid HTTP routing decisions. In some configurations, sub-optimal routing decisions may result in serious service degradation or even transaction failures.

If the system does not contain buffer-overrun protection leading to that crash this bug will instead allow attackers to leak arbitrary amounts of information from the heap into Squid log files. This is of higher importance than usual because the pinger process operates with root priviliges.

Squid security advisory 2016:4 reports :

Due to incorrect bounds checking Squid is vulnerable to a denial of service attack when processing HTTP responses.

This problem allows a malicious client script and remote server delivering certain unusual HTTP response syntax to trigger a denial of service for all clients accessing the Squid service.

Security fix for CVE-2016-4553, CVE-2016-4554, CVE-2016-4555, CVE-2016-4556

----

Security fix for CVE-2016-4051, CVE-2016-4052, CVE-2016-4053, CVE-2016-4054

----

Security fix for CVE-2016-3947 and CVE-2016-3948

----

Security fix for CVE-2016-2569 CVE-2016-2570 CVE-2016-2571 CVE-2016-2572

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

The Squid HTTP proxy has been updated to version 3.3.14, fixing the following security issues :

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

  - CVE-2015-5400: Improper protection of alternate path.
    (bsc#938715)

  - CVE-2015-3455: Squid http proxy configured with     client-first SSL bumping did not correctly validate     server certificate. (bsc#929493)

  - CVE-2016-3948: Fixed 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: Fixed     multiple issues in ESI processing (bsc#976556)

  - CVE-2016-4553: Fixed cache poisoning issue in HTTP     Request handling (bsc#979009)

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

  - Fixed multiple Denial of Service issues in ESI Response     processing. (CVE-2016-4555, CVE-2016-4556, bsc#979011,     bsc#979008)

The update package also includes non-security fixes. See advisory for details.

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.

The following packages have been upgraded to a newer upstream version:
squid (3.5.20).

Security Fix(es) :

  - Incorrect boundary checks were found in the way squid     handled headers in HTTP responses, which could lead to     an assertion failure. A malicious HTTP server could use     this flaw to crash squid using a specially crafted HTTP     response. (CVE-2016-2569, CVE-2016-2570)

  - It was found that squid did not properly handle errors     when failing to parse an HTTP response, possibly leading     to an assertion failure. A malicious HTTP server could     use this flaw to crash squid using a specially crafted     HTTP response. (CVE-2016-2571, CVE-2016-2572)

  - An incorrect boundary check was found in the way squid     handled the Vary header in HTTP responses, which could     lead to an assertion failure. A malicious HTTP server     could use this flaw to crash squid using a specially     crafted HTTP response. (CVE-2016-3948)

Additional Changes :

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.

ID	名稱	產品	系列	已發布	已更新	嚴重性
99818	EulerOS 2.0 SP1 : squid (EulerOS-SA-2016-1056)	Nessus	Huawei Local Security Checks	2017/5/1	2025/12/22	high
91982	GLSA-201607-01 : Squid: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2016/7/11	2021/1/11	high
291556	MiracleLinux 7 : squid-3.5.20-2.el7 (AXSA:2016-905:02)	Nessus	Miracle Linux Local Security Checks	2026/1/19	2026/1/19	high
90334	FreeBSD : squid -- multiple vulnerabilities (297117ba-f92d-11e5-92ce-002590263bf5)	Nessus	FreeBSD Local Security Checks	2016/4/5	2021/1/4	high
92285	Fedora 23 : 7:squid (2016-b3b9407940)	Nessus	Fedora Local Security Checks	2016/7/15	2026/2/2	high
93279	SUSE SLES12 Security Update : squid (SUSE-SU-2016:2008-1)	Nessus	SuSE Local Security Checks	2016/9/2	2026/1/27	high
95860	Scientific Linux Security Update : squid on SL7.x x86_64 (20161103)	Nessus	Scientific Linux Local Security Checks	2016/12/15	2026/1/8	high
93271	SUSE SLES11 Security Update : squid3 (SUSE-SU-2016:1996-1)	Nessus	SuSE Local Security Checks	2016/9/2	2026/1/27	high

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