Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 29 Mar 2024 12:19:26 -0700
From: Andres Freund <>
Subject: Re: backdoor in upstream xz/liblzma leading to ssh
 server compromise


On 2024-03-29 19:44:05 +0100, Matthias Weckbecker wrote:
> I've attached a yara rule to detect the *.o droplet you attached in the
> email (liblzma_la-crc64-fast.o.gz).

Unfortunately xz 5.61 added further obfuscations, making it harder to
detect. Should have made it clearer that the attached .o was from 5.60. Among
others 5.61 removed the two symbols you're checking against here.  That's why
Vegard's script looks for a specific instructions sequence, but obviously is
also more obscure :/



Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.