Input validation error in Squid-cache Squid

1) Input validation error

EUVDB-ID: #VU44754

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-2011-3205

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows remote Gopher servers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (memory corruption and daemon restart) or possibly have unspecified other impact via a long line in a response.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Squid: 3.0.stable1 - 3.2.0.10

External links

http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065534.html
http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
http://openwall.com/lists/oss-security/2011/08/29/2
http://openwall.com/lists/oss-security/2011/08/30/4
http://openwall.com/lists/oss-security/2011/08/30/8
http://secunia.com/advisories/45805
http://secunia.com/advisories/45906
http://secunia.com/advisories/45920
http://secunia.com/advisories/45965
http://secunia.com/advisories/46029
http://securitytracker.com/id?1025981
http://www.debian.org/security/2011/dsa-2304
http://www.mandriva.com/security/advisories?name=MDVSA-2011:150
http://www.osvdb.org/74847
http://www.redhat.com/support/errata/RHSA-2011-1293.html
http://www.securityfocus.com/bid/49356
http://www.squid-cache.org/Advisories/SQUID-2011_3.txt
http://www.squid-cache.org/Versions/v2/2.HEAD/changesets/12710.patch
http://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9193.patch
http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10363.patch
http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11294.patch
http://bugzilla.redhat.com/show_bug.cgi?id=734583

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.