Heap-based buffer overflow in Squid-cache Squid

1) Heap-based buffer overflow

EUVDB-ID: #VU33654

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-6270

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in Off-by-one error in the snmpHandleUdp function in snmp_core.cc in Squid 2.x and 3.x, when an SNMP port is configured,. A remote attacker can use a crafted UDP SNMP request 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Squid: 2.4.stable1 - 3.4.7

Oracle Solaris: 2.4.stable1 - 11.2

External links

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
http://seclists.org/oss-sec/2014/q3/542
http://seclists.org/oss-sec/2014/q3/550
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.securityfocus.com/bid/69686
http://www.ubuntu.com/usn/USN-2921-1
http://bugzilla.novell.com/show_bug.cgi?id=895773
http://bugzilla.redhat.com/show_bug.cgi?id=1139967
http://exchange.xforce.ibmcloud.com/vulnerabilities/95873
http://security.gentoo.org/glsa/201607-01

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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