oss-sec mailing list archives

Re: "sshole": password authentication bypass: OpenSSH + musl libc


From: Vincent Lefevre <vincent () vinc17 net>
Date: Thu, 5 Nov 2026 23:50:00 +0100

On 2026-11-05 23:38:51 +0400, Loganaden Velvindron wrote:
It's unfortunate that some people are writing misleading statements
about a security problem in OpenSSH, especially on linkedin, despite
djm@ explaining that this is a WORKAROUND.

This is not clear. Under Debian, the crypt(3) man page says:

  Upon error, crypt_r, crypt_rn, and crypt_ra write an invalid hash
  to  the  output field of their data argument, and crypt writes an
  invalid hash to its static storage area.   This  string  will  be
  shorter  than  13 characters, will begin with a ‘*’, and will not
  compare equal to setting.

So it seems that "*" could be a valid result in case of error.

-- 
Vincent Lefèvre <vincent () vinc17 net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)


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