#VU33829 Input validation error in PostgreSQL - CVE-2015-3165

Vulnerability identifier: #VU33829

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-2015-3165

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software

Vendor: PostgreSQL Global Development Group

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 - 9.0.19, 9.1.0 - 9.1.15, 9.2.0 - 9.2.10, 9.3.0 - 9.3.6, 9.4.0 - 9.4.1

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

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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.