CVE-2014-6270

Updated squid packages fix security vulnerabilities:

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).

squid was updated to fix two security issues.

These security issues were fixed:

• CVE-2014-6270: Fixed an off by one in snmp subsystem (bsc#895773).
• CVE-2014-9749: Fixed a nonce replay vulnerability in Digest authentication (bsc#949942).

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)

Off-by-one error in the snmpHandleUdp function in snmp_core.cc in Squid 2.x and 3.x, when an SNMP port is configured, allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted UDP SNMP request, which triggers a heap-based buffer overflow.

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)