Synopsis
The remote database server is affected by multiple Denial of Service (DoS) attack vectors.
Description
MariaDB is a community-developed fork of the MySQL relational database. The version of MariaDB installed on the remote host is 10.0.x earlier than 10.0.25, or 10.1.x earlier than 10.1.13, and is therefore affected by multiple vulnerabilities :
- An overflow condition exists in the 'extension_based_table_discovery()' function in 'sql/discover.cc'. The issue is triggered as user-supplied input is not properly validated. This may allow an authenticated attacker to cause a buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.
- A flaw exists in the 'row_search_for_mysql()' function in 'storage/xtradb/row/row0sel.cc' that is triggered during the handling of key values. This may allow an authenticated attacker to crash the database.
- A flaw exists in the 'mariadb_dyncol_unpack()' function in 'mysys/ma_dyncol.c'. The issue is triggered as user-supplied input is not properly validated. This may allow an authenticated attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code.
Solution
Upgrade to version 10.1.13 or later. If version 10.1.x cannot be obtained, version 10.0.25 has also been patched for these issues.