Squid 3.5.x < 3.5.15 Multiple Vulnerabilities

medium Nessus Network Monitor Plugin ID 9774
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The remote proxy server is affected by multiple attack vectors.


Versions of Squid 3.5.x prior to 3.5.15 are affected by multiple vulnerabilities :

- A flaw is triggered when performing improper bounds checks on specially crafted HTTP responses. This may allow a remote attacker to cause a denial of service.
- A flaw is triggered as bounds are not properly checked when processing HTTP responses. This may allow a remote attacker to cause a denial of service for all clients accessing the service.
- An overflow condition exists in the 'Icmp6::Recv()' function in 'icmp/Icmp6.cc' of the pinger binary. The issue is triggered as user-supplied input is not properly validated when handling specially crafted ICMPv6 packets. This may allow a remote attacker to cause a buffer overflow, crashing the pinger process or potentially leaking data into log files.


Either upgrade to Squid version 3.5.15 or later, or apply the vendor-supplied patch.

See Also



Plugin Details

Severity: Medium

ID: 9774

Family: Web Servers

Published: 11/11/2016

Updated: 3/6/2019

Dependencies: 3389

Nessus ID: 89080

Risk Information


Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 5.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

Patch Publication Date: 4/2/2016

Vulnerability Publication Date: 4/2/2016

Reference Information

CVE: CVE-2016-2569, CVE-2016-2570, CVE-2016-3947, CVE-2016-3948

BID: 83406, 85803, 85805