The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.13 and 2.16.1, cross-host request replay updates the current request but leaves the target request and related proxy context pointing at the original origin. Connection-pool selection, CONNECT handling, realm selection, and TLS setup can consequently send the original host's path, Host header, Authorization credentials, or plaintext request to the replay destination.
Documented ResponseFilter failover and retry paths can trigger the replay. This issue is fixed in versions 3.0.13 and 2.16.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
asynchttpclient:async-http-client
References 5
https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-j…
https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-jmqq-x5g9-9p2w
https://github.com/AsyncHttpClient/async-http-client/commit/15b254514a411623e5f…
https://github.com/AsyncHttpClient/async-http-client/commit/15b254514a411623e5f1d8c99ea79c0f82f8a466
https://github.com/AsyncHttpClient/async-http-client/commit/bbc31aed3b044f9f7a1…
https://github.com/AsyncHttpClient/async-http-client/commit/bbc31aed3b044f9f7a126cf689a8c8d7ad2ae1cb
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-cl…
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-cl…
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13