Input validation error in PostgreSQL

1) Input validation error

EUVDB-ID: #VU33829

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-3165

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

Double free vulnerability in PostgreSQL before 9.0.20, 9.1.x before 9.1.16, 9.2.x before 9.2.11, 9.3.x before 9.3.7, and 9.4.x before 9.4.2 allows remote attackers to cause a denial of service (crash) by closing an SSL session at a time when the authentication timeout will expire during the session shutdown sequence. <a href="http://cwe.mitre.org/data/definitions/415.html">CWE-415: Double Free</a>

Mitigation

Install update from vendor's website.

Vulnerable software versions

PostgreSQL: 9.0.0 - 9.4.1

External links

http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html
http://rhn.redhat.com/errata/RHSA-2015-1194.html
http://rhn.redhat.com/errata/RHSA-2015-1195.html
http://rhn.redhat.com/errata/RHSA-2015-1196.html
http://www.debian.org/security/2015/dsa-3269
http://www.debian.org/security/2015/dsa-3270
http://www.postgresql.org/about/news/1587/
http://www.postgresql.org/docs/9.0/static/release-9-0-20.html
http://www.postgresql.org/docs/9.1/static/release-9-1-16.html
http://www.postgresql.org/docs/9.2/static/release-9-2-11.html
http://www.postgresql.org/docs/9.3/static/release-9-3-7.html
http://www.postgresql.org/docs/9.4/static/release-9-4-2.html
http://www.securityfocus.com/bid/74787
http://www.ubuntu.com/usn/USN-2621-1
http://security.gentoo.org/glsa/201507-20
http://support.apple.com/HT205219

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.