Description
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.4.0rc2, the twisted.names module is vulnerable to a Denial of Service (DoS) attack via resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can exploit this by sending a crafted TCP DNS packet containing deeply chained compression pointers. This flaw bypasses previous loop-prevention logic, causing the single-threaded Twisted reactor to hang while processing millions of recursive lookups, effectively freezing the server. This vulnerability is fixed in 26.4.0rc2.
Mitigation
Minimal update. May introduce new vulnerabilities or breaking changes.
|
 debian 11 | | =20.3.0-7 || =20.3.0-7+deb11u1 || =20.3.0-7+deb11u2 || =22.1.0-1 || =22.1.0-2 || =22.2.0-1 || =22.4.0-1 || =22.4.0-2 || =22.4.0-3 || =22.4.0-4 || =23.10.0-1 || =23.10.0-2 || =24.10.0-1 || =24.10.0-2 || =24.11.0-1 || =24.3.0-1 || =24.3.0-2 || =24.3.0-3 || =24.7.0-1 || =24.7.0-2 || =24.7.0-3 || =25.5.0-1 || =25.5.0-2 || =25.5.0-3 || =25.5.0-4 || =25.5.0-5 || =26.4.0-1 | - |
 pypi | | | 26.4.0rc2 |
debian 13 | | =24.11.0-1 || =25.5.0-1 || =25.5.0-2 || =25.5.0-3 || =25.5.0-4 || =25.5.0-5 || =26.4.0-1 | - |
debian 12 | | =22.4.0-4 || =22.4.0-4+deb12u1 || =23.10.0-1 || =23.10.0-2 || =24.10.0-1 || =24.10.0-2 || =24.11.0-1 || =24.3.0-1 || =24.3.0-2 || =24.3.0-3 || =24.7.0-1 || =24.7.0-2 || =24.7.0-3 || =25.5.0-1 || =25.5.0-2 || =25.5.0-3 || =25.5.0-4 || =25.5.0-5 || =26.4.0-1 | - |
debian 14 | | =24.11.0-1 || =25.5.0-1 || =25.5.0-2 || =25.5.0-3 || =25.5.0-4 || =25.5.0-5 || =26.4.0-1 | - |
