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  • A10 ACOS Web Application Firewall (WAF) mishandles the configured rules for blocking SQL injection attacks

    11-10-2018

    CVEID: CVE-2018-15904

    Affected Product: A10 ACOS Web Application Firewall (WAF)

    Affected releases: 2.7.1 and 2.7.2 before 2.7.2-P12, 4.1.0 before 4.1.0-P11, 4.1.1 before 4.1.1-P8, and 4.1.2 before 4.1.2-P4

    Executive Summary
    A critical vulnerability was discovered in several releases of A10 ACOS operating system in branches 2.7 and 4.1.
    A remote attacker could send specially-crafted HTTP requests, which could be passed through by the ACOS Web Application Firewall (WAF) rather than being dropped per configured rules. This could allow a remote attacker to conduct web application layer attacks (such as SQL injection or XSS) on targeted systems.

    Remediation: Upgrade according to indication from the vendor

     

    Timeline:

    23/11/2017 – Initial vendor contact
    29/11/2017 – Vendor acknowledged and agreed to further discuss the problem and to coordinate the disclosure

    26/02/2018 – Vendor confirmed the fix being targeted for ACOS 4.1.0-P11, 4.1.1-P8 & 4.1.2-P4
    18/7/2018 – Vendor published advisory
    27/8/2018 – MITRE assigned CVE 2018-15904

    Discovered by:  Quantum Leap Pentesting team
    Reported by: Reporter: Luca Profico <l.profico@quantumleap.it>

    Reference:

    https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-15904

    https://www.a10networks.com/support/security-advisories/waf-sql-injection-attack-sqlia-vulnerability

    https://www.a10networks.com/sites/default/files/security-advisories/WAF-SQL-Injection-Attack-SQLIA-Vulnerability.pdf