Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

A buffer overflow flaw was found in the way Squid parsed replies from remote Gopher servers. A remote user allowed to send Gopher requests to a Squid proxy could possibly use this flaw to cause the squid child process to crash or execute arbitrary code with the privileges of the squid user, by making Squid perform a request to an attacker-controlled Gopher server.

Users of squid should upgrade to this updated package, which contains a backported patch to correct this issue. After installing this update, the squid service will be restarted automatically.

According to its banner, the version of Squid running on the remote host is 3.x prior to 3.0.STABLE26 / 3.1.15 / 3.2.0.11. It reportedly contains a buffer overflow when parsing responses from Gopher servers that results in memory corruption and usually causes the Squid server itself to crash.

Note that Nessus has relied only on the version in the proxy server's banner, which is not updated by either of the patches the project has released to address the issue. If one of those has been applied properly and the service is restarted, consider this to be a false positive.

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.

Upstream 3.1.15 release fixing a buffer overflow issue in gopher:// processing (SQUID-2011:3)

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

The remote MiracleLinux 4 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2011-730:02 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-2011-3205     Buffer overflow in the gopherToHTML function in gopher.cc in the Gopher reply parser in Squid 3.0 before     3.0.STABLE26, 3.1 before 3.1.15, and 3.2 before 3.2.0.11 allows remote Gopher servers to cause a denial of     service (memory corruption and daemon restart) or possibly have unspecified other impact via a long line     in a response. NOTE: This issue exists because of a CVE-2005-0094 regression.

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

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

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.

The remote Solaris system is missing necessary patches to address security updates :

  - Buffer overflow in the gopherToHTML function in     gopher.cc in the Gopher reply parser in Squid 3.0 before     3.0.STABLE26, 3.1 before 3.1.15, and 3.2 before 3.2.0.11     allows remote Gopher servers to cause a denial of     service (memory corruption and daemon restart) or     possibly have unspecified other impact via a long line     in a response. NOTE: This issue exists because of a     CVE-2005-0094 regression. (CVE-2011-3205)

The remote Redhat Enterprise Linux 6 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2011:1293 advisory.

  - squid: buffer overflow flaw in Squid's Gopher reply parser (SQUID-2011:3) (CVE-2011-3205)

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

This update of squid3 fixes a buffer overflow vulnerability in the Gopher reply parser code. (CVE-2011-3205)

This update of squid3 fixes a buffer overflow vulnerability in the Gopher reply parser code (CVE-2011-3205).

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
61135	Scientific Linux Security Update : squid on SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	medium
56215	Squid 3.x < 3.0.STABLE26 / 3.1.15 / 3.2.0.11 Gopher Buffer Overflow	Nessus	Firewalls	2011/9/16	2018/7/30	medium
93294	SUSE SLES11 Security Update : squid3 (SUSE-SU-2016:2089-1)	Nessus	SuSE Local Security Checks	2016/9/2	2026/1/27	high
56138	Fedora 14 : squid-3.1.15-1.fc14 (2011-11854)	Nessus	Fedora Local Security Checks	2011/9/9	2021/1/11	medium
284477	MiracleLinux 4 : squid-3.1.10-1.AXS4.1 (AXSA:2011-730:02)	Nessus	Miracle Linux Local Security Checks	2026/1/14	2026/1/14	critical
93271	SUSE SLES11 Security Update : squid3 (SUSE-SU-2016:1996-1)	Nessus	SuSE Local Security Checks	2016/9/2	2026/1/27	high
80772	Oracle Solaris Third-Party Patch Update : squid (cve_2011_3205_buffer_overflow)	Nessus	Solaris Local Security Checks	2015/1/19	2021/1/14	medium
56205	RHEL 6 : squid (RHSA-2011:1293)	Nessus	Red Hat Local Security Checks	2011/9/15	2024/4/24	critical
57134	SuSE 11.1 Security Update : squid3 (SAT Patch Number 5095)	Nessus	SuSE Local Security Checks	2011/12/13	2021/1/19	medium
75747	openSUSE Security Update : squid3 (openSUSE-SU-2011:1018-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/14	medium

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