Bugtraq mailing list archives
Re: Solaris 7 x86 lpset exploit.
From: Darren.Moffat () UK SUN COM (Darren Moffat - Solaris Sustaining Engineering)
Date: Fri, 28 Apr 2000 10:12:46 +0100
on all solaris/sparc app's i have used so far, there is a reason, why SUN does enable stack execution by default, if i am correctly informed this is due to some fortran or rare/old compiler issue, and might break some fortran or other alien language code...
Correct, some lisp and Objective C compilers use trampolineing as part of their compiler/interpreter mechanism this relies on executing code sitting on the stack. The most important reason is that SPARCv{7,8} ABI requires the stack to be executable so chaining it would mean Solaris was no longer compliant with the SPARC ABI. SPARCv9 ABI has the stack non-executable so 64bit programs already have a nonexec_user_stack style of protection. Note that you need the Sun Workshop C compiler 5.0 or above to generate 64bit binaries. -- Darren J Moffat
Current thread:
- Re: Solaris 7 x86 lpset exploit. Darren Moffat - Solaris Sustaining Engineering (Apr 28)
- <Possible follow-ups>
- Re: Solaris 7 x86 lpset exploit. Elias Levy (Apr 28)
- Re: Solaris 7 x86 lpset exploit. der Mouse (Apr 29)