CentOS Update for squid CESA-2016:1139 centos7

Published: 2016-06-03 10:55:05
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P

Detection Type:
Linux Distribution Package

Summary:
Check the version of squid

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Security Fix(es): * A buffer overflow flaw was found in the way the Squid cachemgr.cgi utility processed remotely relayed Squid input. When the CGI interface utility is used, a remote attacker could possibly use this flaw to execute arbitrary code. (CVE-2016-4051) * Buffer overflow and input validation flaws were found in the way Squid processed ESI responses. If Squid was used as a reverse proxy, or for TLS/HTTPS interception, a remote attacker able to control ESI components on an HTTP server could use these flaws to crash Squid, disclose parts of the stack memory, or possibly execute arbitrary code as the user running Squid. (CVE-2016-4052, CVE-2016-4053, CVE-2016-4054) * An input validation flaw was found in the way Squid handled intercepted HTTP Request messages. An attacker could use this flaw to bypass the protection against issues related to CVE-2009-0801, and perform cache poisoning attacks on Squid. (CVE-2016-4553) * An input validation flaw was found in Squid's mime_get_header_field() function, which is used to search for headers within HTTP requests. An attacker could send an HTTP request from the client side with specially crafted header Host header that bypasses same-origin security protections, causing Squid operating as interception or reverse-proxy to contact the wrong origin server. It could also be used for cache poisoning for client not following RFC 7230. (CVE-2016-4554) * A NULL pointer dereference flaw was found in the way Squid processes ESI responses. If Squid was used as a reverse proxy or for TLS/HTTPS interception, a malicious server could use this flaw to crash the Squid worker process. (CVE-2016-4555) * An incorrect reference counting flaw was found in the way Squid processes ESI responses. If Squid is configured as reverse-proxy, for TLS/HTTPS interception, an attacker controlling a server accessed by Squid, could crash the squid worker, causing a Denial of Service attack. (CVE-2016-4556)

Affected Versions:
squid on CentOS 7

Recommendations:
Please Install the Updated Packages.

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2016-4051
https://nvd.nist.gov/vuln/detail/CVE-2016-4052
https://nvd.nist.gov/vuln/detail/CVE-2016-4053
https://nvd.nist.gov/vuln/detail/CVE-2016-4054
https://nvd.nist.gov/vuln/detail/CVE-2016-4553
https://nvd.nist.gov/vuln/detail/CVE-2016-4554
https://nvd.nist.gov/vuln/detail/CVE-2016-4555
https://nvd.nist.gov/vuln/detail/CVE-2016-4556
https://nvd.nist.gov/vuln/detail/CVE-2009-0801

References:

http://lists.centos.org/pipermail/centos-announce/2016-May/021900.html

Severity
Medium
CVSS Score
6.8
Published
2016-06-03
Modified
2019-03-08
Category
CentOS Local Security Checks

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