Scientific Linux Security Update : squid on SL7.x x86_64 (20151119)

low Nessus Plugin ID 87574
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Scientific Linux host is missing one or more security updates.


It was found that Squid configured with client-first SSL-bump did not correctly validate X.509 server certificate host name fields. A man-in- the-middle attacker could use this flaw to spoof a Squid server using a specially crafted X.509 certificate. (CVE-2015-3455)

This update fixes the following bugs :

- Previously, the squid process did not handle file descriptors correctly when receiving Simple Network Management Protocol (SNMP) requests. As a consequence, the process gradually accumulated open file descriptors.
This bug has been fixed and squid now handles SNMP requests correctly, closing file descriptors when necessary.

- Under high system load, the squid process sometimes terminated unexpectedly with a segmentation fault during reboot. This update provides better memory handling during reboot, thus fixing this bug.

After installing this update, the squid service will be restarted automatically.


Update the affected squid, squid-debuginfo and / or squid-sysvinit packages.

See Also

Plugin Details

Severity: Low

ID: 87574

File Name: sl_20151119_squid_on_SL7_x.nasl

Version: 2.4

Type: local

Agent: unix

Published: 12/22/2015

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Low

Base Score: 2.6

Vector: AV:N/AC:H/Au:N/C:N/I:P/A:N

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:squid, p-cpe:/a:fermilab:scientific_linux:squid-debuginfo, p-cpe:/a:fermilab:scientific_linux:squid-sysvinit, x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 11/19/2015

Vulnerability Publication Date: 5/18/2015

Reference Information

CVE: CVE-2015-3455