Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.
Fixed in 22.2.0.
GLSA request filed
The bug has been referenced in the following commit(s):
Author: GLSAMaker <firstname.lastname@example.org>
AuthorDate: 2023-01-11 05:16:16 +0000
Commit: John Helmert III <email@example.com>
CommitDate: 2023-01-11 05:22:04 +0000
[ GLSA 202301-02 ] Twisted: Multiple Vulnerabilities
Signed-off-by: GLSAMaker <firstname.lastname@example.org>
Signed-off-by: John Helmert III <email@example.com>
glsa-202301-02.xml | 46 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
GLSA released, all done!