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, the HTTP/1.1 connection-pool key excludes the authenticated principal for connection-oriented NTLM and Negotiate authentication. A pooled socket authenticated for one request can be reused by a request carrying another principal, and the server executes that later request as the first identity.
Basic and Digest are not affected because they authenticate each request. 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
Low
Basic 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-v…
https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-vvp4-63h8-v5pm
https://github.com/AsyncHttpClient/async-http-client/commit/73813babf51231ee79f…
https://github.com/AsyncHttpClient/async-http-client/commit/73813babf51231ee79f7da4f07b777f19f48d34d
https://github.com/AsyncHttpClient/async-http-client/commit/83e552e64cabab2119a…
https://github.com/AsyncHttpClient/async-http-client/commit/83e552e64cabab2119addb6b47f7c6482997c94e
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