REDHAT-BUG-2499924: Medium severity libsoup vulnerability
Vulnerability Reference:
A flaw in libsoup's WebSocket implementation allows a remote attacker to trigger a denial of service (DoS) by exploiting a protocol validation failure.
Component / Vulnerable Part:
libsoup -> libsoup/websocket/soup-websocket-connection.c (Control frame parser)
Technical Analysis & Root Cause:
Per RFC 6455 §5.5, WebSocket control frames (PING, PONG, CLOSE) must not exceed a payload length of 125 bytes and cannot be fragmented. libsoup's frame parsing logic fails to immediately reject non-compliant control frames exceeding this limit. When an oversized control frame is received, the unexpected state disrupts the state machine or triggers an unhandled execution error, forcing the library to abruptly crash.
Impact:
A remote, unauthenticated attacker (client or server) can send a single malformed, oversized control frame to instantly terminate the connection wrapper, resulting in a remote denial of service for any application using libsoup WebSockets.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2499924?
The severity of REDHAT-BUG-2499924 is rated as medium (4).
How do I fix REDHAT-BUG-2499924?
To fix REDHAT-BUG-2499924, update the libsoup package to the latest version that includes the patch addressing the vulnerability.
What type of vulnerability is REDHAT-BUG-2499924?
REDHAT-BUG-2499924 is a denial of service (DoS) vulnerability related to a flaw in the WebSocket implementation of libsoup.
Which component is affected by REDHAT-BUG-2499924?
The component affected by REDHAT-BUG-2499924 is libsoup, specifically the websocket control frame parser.
Can REDHAT-BUG-2499924 be exploited remotely?
Yes, REDHAT-BUG-2499924 can be exploited by a remote attacker to trigger a denial of service.