Summary
The Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions.
Impact
If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.
Patch: 259edc3
Summary
The Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions.
Impact
If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or
AIOHTTP_NO_EXTENSIONSis enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.Patch: 259edc3