Oracle MySQL Server up to 5.7.26/8.0.16 Client programs access control

Summaryinfo

A vulnerability, which was classified as critical, has been found in Oracle MySQL Server up to 5.7.26/8.0.16. This vulnerability affects unknown code of the component Client programs. This manipulation causes access control. This vulnerability is tracked as CVE-2019-2797. The attack is only possible within the local network. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Oracle MySQL Server up to 5.7.26/8.0.16 (Database Software). Affected by this vulnerability is an unknown functionality of the component Client programs. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect availability. The summary by CVE is:

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Client programs). Supported versions that are affected are 5.7.26 and prior and 8.0.16 and prior. Difficult to exploit vulnerability allows high privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Server executes 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 4.2 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

The weakness was disclosed 07/16/2019 as Oracle Critical Patch Update Advisory - Juli 2019 as confirmed advisory (Website). The advisory is shared at oracle.com. This vulnerability is known as CVE-2019-2797 since 12/14/2018. The exploitation appears to be difficult. The attack can only be done within the local network. Additional levels of successful authentication are required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 210323 (RHEL 7 : rh-mysql80-mysql (RHSA-2019:2484)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (210323). The entries VDB-137972, VDB-137963, VDB-137964 and VDB-137965 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Database Software

Vendor

• Oracle

Name

• MySQL Server

Version

• 5.7.0
• 5.7.1
• 5.7.2
• 5.7.3
• 5.7.4
• 5.7.5
• 5.7.6
• 5.7.7
• 5.7.8
• 5.7.9
• 5.7.10
• 5.7.11
• 5.7.12
• 5.7.13
• 5.7.14
• 5.7.15
• 5.7.16
• 5.7.17
• 5.7.18
• 5.7.19
• 5.7.20
• 5.7.21
• 5.7.22
• 5.7.23
• 5.7.24
• 5.7.25
• 5.7.26
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.0.5
• 8.0.6
• 8.0.7
• 8.0.8
• 8.0.9
• 8.0.10
• 8.0.11
• 8.0.12
• 8.0.13
• 8.0.14
• 8.0.15
• 8.0.16

License

• open-source

Website

• Vendor: https://www.oracle.com

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion