The AsyncResponseWrapperImpl class in Apache Olingo versions 4.0.0 to 4.6.0 reads the Retry-After header and passes it to the Thread.sleep() method without any check. If a malicious server returns a huge value in the header, then it can help to implement a DoS attack.
[
{
"product": "Olingo",
"vendor": "Apache",
"versions": [
{
"status": "affected",
"version": "4.0.0 to 4.6.0"
}
]
}
]