CVE-2011-1658

Published: 8 April 2011

ld.so in the GNU C Library (aka glibc or libc6) 2.13 and earlier expands the $ORIGIN dynamic string token when RPATH is composed entirely of this token, which might allow local users to gain privileges by creating a hard link in an arbitrary directory to a (1) setuid or (2) setgid program with this RPATH value, and then executing the program with a crafted value for the LD_PRELOAD environment variable, a different vulnerability than CVE-2010-3847 and CVE-2011-0536. NOTE: it is not expected that any standard operating-system distribution would ship an applicable setuid or setgid program.

Notes

there *may* be reggressions introduced by the 3 commits
below that are addressed by the following commits.
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=47c3cd7a74e8c089d60d603afce6d9cf661178d6;hp=d08055417d0187875806161fab8c4777adfb7ba8
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=22836f52e3e4740e450f9b93a2f1e31a90b168a6;hp=7b3b0b2a63f7e980adb630550c0dc9639ec09d7f

Status

References

• https://ubuntu.com/security/notices/USN-1396-1
• https://www.cve.org/CVERecord?id=CVE-2011-1658
• NVD
• Launchpad
• Debian

Bugs

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1658
• http://sourceware.org/bugzilla/show_bug.cgi?id=12393