CVE-2017-10314 in MySQL Server
Summary
by MITRE
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Memcached). Supported versions that are affected are 5.6.37 and earlier and 5.7.19 and earlier. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 01/18/2021
The vulnerability identified as CVE-2017-10314 resides within the MySQL Server component, specifically within the Server: Memcached subcomponent, presenting a significant security risk to database environments. This flaw affects MySQL versions 5.6.37 and earlier, as well as 5.7.19 and earlier, indicating a widespread impact across multiple supported release lines. The vulnerability's classification as easily exploitable underscores its accessibility to attackers who possess network access and high privilege levels, making it particularly concerning for organizations with robust network security controls. The attack vector requires network access via multiple protocols, suggesting that the vulnerability can be leveraged through various communication channels that MySQL supports, potentially including TCP/IP connections, Unix domain sockets, and other network interfaces that the database server may utilize.
The technical nature of this vulnerability manifests as a weakness that allows a high-privileged attacker to compromise the MySQL Server through network-based attacks. The specific impact involves the ability to cause a hang or frequently repeatable crash of the MySQL Server, effectively resulting in a complete denial of service condition. This type of vulnerability represents a critical availability threat within the database infrastructure, as it can render database services completely inaccessible to legitimate users and applications. The CVSS 3.0 base score of 4.9 indicates a moderate severity level, though the availability impact score of 8.0 suggests that the consequences of successful exploitation are severe enough to warrant immediate attention. The vulnerability's characteristics align with CWE-119, which describes issues related to improper restriction of operations within a limited context, and may also relate to CWE-476, concerning null pointer dereference conditions that can lead to system instability.
The operational impact of CVE-2017-10314 extends beyond simple service disruption, as the complete denial of service can have cascading effects throughout enterprise environments that depend on MySQL databases. Organizations utilizing MySQL Server with Memcached functionality face potential business disruption when this vulnerability is exploited, particularly in mission-critical applications where database availability is essential. The vulnerability's ability to cause repeated crashes suggests that even a single successful exploitation attempt could result in sustained service degradation rather than a one-time disruption. This characteristic makes the vulnerability particularly dangerous in production environments where database uptime is critical for business operations and where automated monitoring systems may struggle to differentiate between legitimate service interruptions and attack-induced crashes. The attack requires high privilege levels, indicating that the vulnerability is not easily exploitable by casual attackers but represents a significant risk from insider threats or compromised accounts with elevated privileges.
Mitigation strategies for CVE-2017-10314 should prioritize immediate patching of affected MySQL versions to the latest supported releases that contain fixes for this vulnerability. Organizations should implement network segmentation and access controls to limit exposure of MySQL servers to untrusted networks and reduce the attack surface available to potential attackers. The implementation of monitoring solutions specifically designed to detect unusual patterns of database server crashes or hangs can provide early warning of exploitation attempts. Database administrators should also consider implementing network access controls that restrict the protocols and ports used by Memcached functionality, reducing the potential attack vectors available to adversaries. Additionally, maintaining regular backups and implementing disaster recovery procedures ensures that organizations can quickly restore services if exploitation occurs despite preventive measures. The vulnerability's classification under the ATT&CK framework would align with techniques related to service stoppage and resource exhaustion, emphasizing the need for robust monitoring and incident response capabilities to detect and respond to such attacks effectively. Organizations should also conduct regular vulnerability assessments to identify other potential weaknesses in their MySQL deployments and ensure that all database components are properly configured and maintained according to security best practices.