SB2016040502 - Fedora 22 update for squid

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Main Vulnerability Database SB2016040502

SB2016040502 - Fedora 22 update for squid

Published: April 5, 2016 Updated: April 24, 2025

Security Bulletin ID SB2016040502
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2016-3947)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the Icmp6::Recv function in icmp/Icmp6.cc in the pinger utility in Squid before 3.5.16 and 4.x before 4.0.8. A remote attacker can use an ICMPv6 packet. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Memory corruption (CVE-ID: CVE-2016-3948)

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper bounds checking. A remote attacker can use a specially crafted HTTP response, related to Vary headers, trigger memory corruption and cause the service to crash.

Remediation

Install update from vendor's website.

References