Input validation error in PostgreSQL

1) Input validation error

EUVDB-ID: #VU33905

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:L/PR:/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-1900

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote #AU# to execute arbitrary code.

PostgreSQL 9.2.x before 9.2.4, 9.1.x before 9.1.9, 9.0.x before 9.0.13, and 8.4.x before 8.4.17, when using OpenSSL, generates insufficiently random numbers, which might allow remote authenticated users to have an unspecified impact via vectors related to the "contrib/pgcrypto functions." Per http://www.ubuntu.com/usn/USN-1789-1/ "A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.10 Ubuntu 12.04 LTS Ubuntu 11.10 Ubuntu 10.04 LTS Ubuntu 8.04 LTS"

Mitigation

Install update from vendor's website.

Vulnerable software versions

PostgreSQL: 9.2.0 - 9.2.3

External links

http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html
http://lists.apple.com/archives/security-announce/2013/Sep/msg00004.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101519.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102806.html
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00012.html
http://rhn.redhat.com/errata/RHSA-2013-1475.html
http://support.apple.com/kb/HT5880
http://support.apple.com/kb/HT5892
http://www.debian.org/security/2013/dsa-2657
http://www.debian.org/security/2013/dsa-2658
http://www.mandriva.com/security/advisories?name=MDVSA-2013:142
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.postgresql.org/about/news/1456/
http://www.postgresql.org/docs/current/static/release-8-4-17.html
http://www.postgresql.org/docs/current/static/release-9-0-13.html
http://www.postgresql.org/docs/current/static/release-9-1-9.html
http://www.postgresql.org/docs/current/static/release-9-2-4.html
http://www.ubuntu.com/usn/USN-1789-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote 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.