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vulnerability CVE-2013-0255

PostgreSQL: denial of service via enum_recv

Synthesis of the vulnerability

An authenticated attacker can call enum_recv, in order to read the memory of PostgreSQL, or to stop it.
Impacted products: Debian, Fedora, MBS, MES, Mandriva Linux, openSUSE, Solaris, PostgreSQL, RHEL.
Severity: 2/4.
Creation date: 07/02/2013.
Identifiers: 907892, BID-57844, CERTA-2013-AVI-103, CVE-2013-0255, DSA-2630-1, FEDORA-2013-2123, FEDORA-2013-2152, MDVSA-2013:012, MDVSA-2013:142, openSUSE-SU-2013:0318-1, openSUSE-SU-2013:0319-1, RHSA-2013:1475-01, VIGILANCE-VUL-12390.

Description of the vulnerability

PostgreSQL supports enumerated types. For example:
  CREATE TYPE color AS ENUM ('red', 'green', 'blue');

The enum_recv function reads an enumerated type. However, it is not correctly declared, and it can read outside an array.

An authenticated attacker can therefore call enum_recv, in order to read the memory of PostgreSQL, or to stop it.
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