CVE-2011-1939 – This CVE describes a SQL injection vulnerabilit... (How to Fix)

Q: What is the severity of CVE-2011-1939?

CVE-2011-1939 has a CVSS score of 9.8 (CRITICAL). This CVE describes a SQL injection vulnerability in Zend Framework when using non-ASCII-compatible encodings with PDO_MySql in older PHP versions. Attackers can execute arbitrary SQL commands, potentially compromising database integrity and confidentiality. Affected systems include Zend Framework 1.10.x before 1.10.9 and 1.11.x before 1.11.6 when running on PHP before 5.3.6.

📋 TL;DR

This CVE describes a SQL injection vulnerability in Zend Framework when using non-ASCII-compatible encodings with PDO_MySql in older PHP versions. Attackers can execute arbitrary SQL commands, potentially compromising database integrity and confidentiality. Affected systems include Zend Framework 1.10.x before 1.10.9 and 1.11.x before 1.11.6 when running on PHP before 5.3.6.

💻 Affected Systems

Products:

Zend Framework

Versions: 1.10.x before 1.10.9, 1.11.x before 1.11.6

Operating Systems: All operating systems running affected PHP versions

Default Config Vulnerable: ⚠️ Yes

Notes: Requires PHP before 5.3.6 with PDO_MySql extension and non-ASCII-compatible encodings (like GBK, BIG5) in use.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete database compromise allowing data theft, modification, or deletion, and potential remote code execution through database functions.

🟠

Likely Case

Unauthorized data access, privilege escalation, and data manipulation through SQL injection attacks.

🟢

If Mitigated

Limited impact with proper input validation, parameterized queries, and network segmentation in place.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

SQL injection vulnerabilities are commonly exploited and tooling exists for automated exploitation.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Zend Framework 1.10.9 or 1.11.6

Vendor Advisory: https://framework.zend.com/security/advisory/ZF2011-01

Restart Required: No

Instructions:

1. Update Zend Framework to version 1.10.9 or 1.11.6. 2. Update PHP to version 5.3.6 or later. 3. Test application functionality after updates.

🔧 Temporary Workarounds

Update PHP

linux

Upgrade PHP to version 5.3.6 or later to fix the underlying PDO_MySql encoding issue.

apt-get update && apt-get install php5.3.6
yum update php

Use parameterized queries

all

Implement prepared statements with parameter binding in all database queries.

🧯 If You Can't Patch

Implement web application firewall (WAF) with SQL injection protection rules
Restrict database user permissions to minimum required privileges

🔍 How to Verify

Check if Vulnerable:

Check Zend Framework version and PHP version. If ZF < 1.10.9 or < 1.11.6 AND PHP < 5.3.6, system is vulnerable.

Check Version:

php -v && grep -r 'Zend Framework' /path/to/application | head -1

Verify Fix Applied:

Confirm Zend Framework version is 1.10.9+ or 1.11.6+ AND PHP version is 5.3.6+.

📡 Detection & Monitoring

Log Indicators:

Unusual database query patterns
SQL syntax errors in application logs
Multiple failed login attempts

Network Indicators:

SQL injection payloads in HTTP requests
Unusual database connection patterns

SIEM Query:

source="web_logs" AND ("UNION SELECT" OR "' OR '1'='1" OR "--" OR ";--")

📊 Metadata

CVE ID: CVE-2011-1939

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-89

Published: November 26, 2019

Last Updated: November 21, 2024

🔗 References

http://security.gentoo.org/glsa/glsa-201408-01.xml Third Party Advisory
http://www.securityfocus.com/bid/47919 Third Party Advisory,VDB Entry
https://access.redhat.com/security/cve/cve-2011-1939 Broken Link
https://bugs.php.net/bug.php?id=47802 Exploit,Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1939 Issue Tracking,Third Party Advisory
https://framework.zend.com/security/advisory/ZF2011-02 Vendor Advisory
https://security-tracker.debian.org/tracker/CVE-2011-1939 Third Party Advisory
http://security.gentoo.org/glsa/glsa-201408-01.xml Third Party Advisory
http://www.securityfocus.com/bid/47919 Third Party Advisory,VDB Entry
https://access.redhat.com/security/cve/cve-2011-1939 Broken Link
https://bugs.php.net/bug.php?id=47802 Exploit,Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1939 Issue Tracking,Third Party Advisory
https://framework.zend.com/security/advisory/ZF2011-02 Vendor Advisory
https://security-tracker.debian.org/tracker/CVE-2011-1939 Third Party Advisory

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