Input validation error in PostgreSQL

1) Input validation error

EUVDB-ID: #VU33905

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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

CPE2.3

• cpe:2.3:a:postgresql_global_development_group:postgresql:9.2.3:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user 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.