Provide references for CVE-2020-13921.
Where can I find more information about CVE-2020-13921?
References are available at: https://github.com/apache/skywalking/pull/4970, http://www.openwall.com/lists/oss-security/2020/08/05/3, https://lists.apache.org/thread.html/r6f3a934ebc54585d8468151a494c1919dc1ee2cccaf237ec434dbbd6%40%3Cdev.skywalking.apache.org%3E.