CWE-252: Unchecked Return Value
The software does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.
顾名思义，Unchecked Return Value，就是在实际代码中缺少了对返回值的检查，在实际代码中，对错误返回值的检查尤为重要，因为需要进入到相应的错误处理环节中去，否则会影响程序的正常运行。比如我们常见的对malloc返回值的检查等等，和CWE-252相关的还有CWE-754、CWE-273、CWE-476
When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=“null” (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.
在一道密码学题目中碰到的问题，需要绕过Miller-Rabin素性测试，稍微记录一下
An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.