#VU32493 Input validation error in Squid - CVE-2014-3609

Vulnerability identifier: #VU32493

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-3609

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Squid
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Squid-cache.org

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

HttpHdrRange.cc in Squid 3.x before 3.3.12 and 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via a request with crafted "Range headers with unidentifiable byte-range values."

Mitigation
Install update from vendor's website.

Vulnerable software versions

Squid: 2.3.stable1 - 2.3.devel3, 3.0.stable1 - 3.3.11

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External links
https://lists.opensuse.org/opensuse-security-announce/2014-09/msg00025.html
https://lists.opensuse.org/opensuse-updates/2014-09/msg00029.html
https://rhn.redhat.com/errata/RHSA-2014-1147.html
https://secunia.com/advisories/60179
https://secunia.com/advisories/60334
https://secunia.com/advisories/61320
https://secunia.com/advisories/61412
https://www.debian.org/security/2014/dsa-3014
https://www.debian.org/security/2015/dsa-3139
https://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
https://www.securityfocus.com/bid/69453
https://www.squid-cache.org/Advisories/SQUID-2014_2.txt
https://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9201.patch
https://www.ubuntu.com/usn/USN-2327-1

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.