There is a vulnerability in log4j 1.2.17 ,upgrade recommended

[QiAnXinCodeSafe]

trafficcontrol/traffic_router/pom.xml

Line 36 in 83e5c3a

<log4j.version>1.2.17</log4j.version>

CVE-2019-17571 CVE-2020-9488

Recommended upgrade version：2.13.2

[rawlinp]

Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.

We do not use the SMTP appender.

Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.

TR doesn't use a deserialization gadget or listen to untrusted network traffic for log data.

Therefore, I don't believe we're vulnerable to these CVEs, but we should probably upgrade these dependencies when we get the chance.

[rimashah25]

We have updated log4j to 2.17.1 (PR: #6390, #6438, #6445)