lkml.org 
[lkml]   [2001]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Disturbing news..
    Jesse Pollard wrote:

    > On Wed, 28 Mar 2001, Shawn Starr wrote:
    >
    >> Well, why can't the ELF loader module/kernel detect or have some sort of
    >> restriction on modifying other/ELF binaries including itself from changing
    >> the Entry point?
    >>
    >> There has to be a way stop this. WHY would anyone want to modify the entry
    >> point anyway? (there may be some reasons but I really dont know what).
    >> Even if it's user level, this cant affect files with root permissions
    >> (unless root is running them or suid).
    >>
    >> Any idea?
    >
    >
    > Sure - very simple. If the execute bit is set on a file, don't allow
    > ANY write to the file. This does modify the permission bits slightly
    > but I don't think it is an unreasonable thing to have.
    >
    What a pain in the ass when you are writing / updating a shell script .
    . . .

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:17    [W:2.745 / U:0.544 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site