CVE Catalog

CVE-2006-2314

High
Published: Translated: NVD NIST

Summary

PostgreSQL vulnerability allows bypassing SQL injection protection in applications using multibyte encodings (SJIS, BIG5, GBK, GB18030, UHC). The issue stems from improper handling of the 0x5c (backslash) byte as the trailing byte of a multibyte character by clients that do not support these encodings.

Risk Assessment

An attacker can inject malicious SQL queries, leading to unauthorized data access, modification, or deletion. The risk affects applications using the specified encodings and older PostgreSQL versions.

Recommendation

Upgrade PostgreSQL to version 8.1.4, 8.0.8, 7.4.13, 7.3.15 or later. Also ensure that clients and applications properly handle multibyte encodings.

Related vulnerabilities

Original NVD description (English source)

PostgreSQL 8.1.x before 8.1.4, 8.0.x before 8.0.8, 7.4.x before 7.4.13, 7.3.x before 7.3.15, and earlier versions allows context-dependent attackers to bypass SQL injection protection methods in applications that use multibyte encodings that allow the "\" (backslash) byte 0x5c to be the trailing byte of a multibyte character, such as SJIS, BIG5, GBK, GB18030, and UHC, which cannot be handled correctly by a client that does not understand multibyte encodings, aka a second variant of "Encoding-Based SQL Injection." NOTE: it could be argued that this is a class of issue related to interaction errors between the client and PostgreSQL, but a CVE has been assigned since PostgreSQL is treating this as a preventative measure against this class of problem.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS