CVE-2016-2571

Updated squid packages fix security vulnerability:

Due to incorrect bounds checking Squid is vulnerable to a denial of service attack when processing HTTP responses (CVE-2016-2569, CVE-2016-2570, CVE-2016-2571).

These are all security issues fixed in the squid-4.16-1.5 package on the GA media of openSUSE Tumbleweed.

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)

Additionally, the following non-security issues have been fixed:

• Fix header size in script unsquid.pl. (bsc#902197)
• Add external helper ext_session_acl to package. (bsc#959290)
• Update forward_max_tries to permit 25 server paths With cloud sites becoming more popular more CDN servers are producing long lists of IPv6 and IPv4 addresses. If there are not enough paths selected the IPv4 ones may never be reached.
• squid.init: wait that squid really dies when we kill it on upgrade instead of proclaiming its demise prematurely (bnc#963539)

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)

Sebastian Krahmer discovered that Squid incorrectly handled certain SNMP requests. If SNMP is enabled, a remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-6270)

Alex Rousskov discovered that Squid incorrectly handled certain malformed responses. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. (CVE-2016-2571)

Mathias Fischer discovered that Squid incorrectly handled certain long strings in headers. A malicious remote server could possibly cause Squid to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 16.04 LTS. (CVE-2016-2569)

William Lima discovered that Squid incorrectly handled XML parsing when processing Edge Side Includes (ESI). A malicious remote server could possibly cause Squid to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 16.04 LTS. (CVE-2016-2570)

Alex Rousskov discovered that Squid incorrectly handled response-parsing failures. A malicious remote server could possibly cause Squid to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS. (CVE-2016-2571)

Santiago Ruano Rincón discovered that Squid incorrectly handled certain Vary headers. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 16.04 LTS. (CVE-2016-3948)

Louis Dion-Marcil discovered that Squid incorrectly handled certain Edge Side Includes (ESI) responses. A malicious remote server could possibly cause Squid to crash, resulting in a denial of service. (CVE-2018-1000024)

Louis Dion-Marcil discovered that Squid incorrectly handled certain Edge Side Includes (ESI) responses. A malicious remote server could possibly cause Squid to crash, resulting in a denial of service. (CVE-2018-1000027)