MariaDB Connector/J: Cleartext password disclosure to a MITM on the initial-handshake
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.7.14, 3.3.5, 3.4.3, 3.5.9
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, when a Java application connects with sslMode=verify-full or sslMode=verify-ca, supplies a password, and does not configure serverSslCert or trustStore, Connector/J can accept an untrusted self-signed certificate through the fallbackToSystemTrustStore=true ephemeral trust manager and record its certFingerprint for later identity binding. The OK-packet and authentication-switch paths enforce the certificate fingerprint, but the initial-handshake path does not. HandshakeResponse.encode() can therefore build and send a mysql_clear_password response before checking certFingerprint != null && !isMitMProof(), sslMode, or whether the authentication plugin is resistant to a man-in-the-middle, and the initial path also bypasses restrictedAuth. An active man-in-the-middle or hostile server can present a self-signed certificate, claim to be MariaDB, select mysql_clear_password as the initial authentication plugin, and receive the full database password before the connection is rejected. This issue is fixed in versions 2.7.14, 3.3.5, 3.4.3, and 3.5.9.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- mariadb-corporation mariadb-connector-j
fixed in 2.7.14; From 3.0.0 · fixed in 3.3.5; From 3.4.0 · fixed in 3.4.3; From 3.5.0 · fixed in 3.5.9
- org.mariadb.jdbc:mariadb-java-clientMaven
fixed in 2.7.14
- org.mariadb.jdbc:mariadb-java-clientMaven
From 3.0.0 · fixed in 3.3.5
- org.mariadb.jdbc:mariadb-java-clientMaven
From 3.4.0 · fixed in 3.4.3
- org.mariadb.jdbc:mariadb-java-clientMaven
From 3.5.0 · fixed in 3.5.9