Permissions, Privileges, and Access Controls in PostgreSQL

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32711

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-1901

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote #AU# to manipulate data.

PostgreSQL 9.2.x before 9.2.4 and 9.1.x before 9.1.9 does not properly check REPLICATION privileges, which allows remote authenticated users to bypass intended backup restrictions by calling the (1) pg_start_backup or (2) pg_stop_backup 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://support.apple.com/kb/HT5880
https://support.apple.com/kb/HT5892
https://www.debian.org/security/2013/dsa-2658
https://www.mandriva.com/security/advisories?name=MDVSA-2013:142
https://www.postgresql.org/about/news/1456/
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.