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Squid < 3.5.17, 4.0.9 Multiple Vulnerabilities

High

Synopsis

The specific version of Squid that the system is running is reportedly affected by multiple vulnerabilities.

Description

The specific version of Squid that the system is running is reportedly affected by the following vulnerabilities:

- Squid contains a flaw in esi/Esi.cc that is triggered as input is not properly validated when handling ESI responses. This may allow a remote attacker to disclose the server stack layout. (CVE-2016-4053)

- Squid contains an overflow condition in esi/Esi.cc that is triggered as user-supplied input is not properly validated when handling ESI responses. This may allow a remote attacker to cause a buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-4054)

- Squid contains an assertion flaw in esi/Esi.cc that is triggered as input is not properly validated when handling ESI responses. This may allow a remote attacker to terminate the service. (CVE-2016-4052)

- Squid contains an overflow condition that is triggered as user-supplied input is not properly validated when processing the length of content lines in reports by the cachemgr.cgi tool. This may allow a remote attacker to cause a buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-4051)

Solution

It has been reported that this has been fixed. Please refer to the product listing for upgraded versions that address this vulnerability. In addition, the vendor has released a patch for some older versions.