Description
suidperl (aka sperl) does not properly cleanse the escape sequence "~!" before calling /bin/mail to send an error report, which allows local users to gain privileges by setting the "interactive" environmental variable and calling suidperl with a filename that contains the escape sequence.
Affected products
- larry_wall / perl5.4.5 – 5.4.5
- larry_wall / perl5.5 – 5.5
- larry_wall / perl5.5.3 – 5.5.3
- larry_wall / perl5.6 – 5.6
Exploits & proofs of concept
- exploit-dbSUIDPerl 5.00503 - Mail Shell Escape (2)by Michal Zalewski
- exploit-dbSUIDPerl 5.00503 - Mail Shell Escape (1)by Sebastian Krahmer
References
- MISChttp://www.turbolinux.com/pipermail/tl-security-announce/2000-August/000017.html
- MISChttp://www.securityfocus.com/bid/1547
- MISChttp://www.redhat.com/support/errata/RHSA-2000-048.html
- VENDOR_ADVISORYhttp://www.calderasystems.com/support/security/advisories/CSSA-2000-026.0.txt
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0086.html
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0153.html
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0022.html
- VENDOR_ADVISORYhttp://www.novell.com/linux/security/advisories/suse_security_announce_59.html
- MISChttp://archives.neohapsis.com/archives/bugtraq/2000-08/0113.html
Updated 22m ago · 8 sources