#VU29426 Buffer overflow in MariaDB Connector/C - CVE-2020-13249

Vulnerability identifier: #VU29426

Vulnerability risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-13249

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MariaDB Connector/C
Universal components / Libraries / Programming Languages & Components

Vendor: MariaDB Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of the content of an OK packet received from a server within the libmariadb/mariadb_lib.c file in MariaDB Connector/C.  A remote attacker can trick the victim to connect to a malicious MariaDB server and trigger memory corruption.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MariaDB Connector/C: 3.1.0 - 3.1.7

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-05/msg00064.html
https://lists.opensuse.org/opensuse-security-announce/2020-06/msg00054.html
https://github.com/mariadb-corporation/mariadb-connector-c/commit/2759b87d72926b7c9b5426437a7c8dd15ff57945
https://github.com/mariadb-corporation/mariadb-connector-c/compare/v3.1.7...v3.1.8
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UW2ED32VEUHXFN2J3YQE27JIBV4SC2PI/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.