Description
The (1) lc, (2) lcfirst, (3) uc, and (4) ucfirst functions in Perl 5.10.x, 5.11.x, and 5.12.x through 5.12.3, and 5.13.x through 5.13.11, do not apply the taint attribute to the return value upon processing tainted input, which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.
Affected products
- perl / perl5.10.0 – 5.10.0
- perl / perl5.10.0 – 5.10.0
- perl / perl5.10.0 – 5.10.0
- perl / perl5.10.1 – 5.10.1
- perl / perl5.10.1 – 5.10.1
- perl / perl5.10.1 – 5.10.1
- perl / perl5.13.0 – 5.13.0
- perl / perl5.13.1 – 5.13.1
- perl / perl5.13.2 – 5.13.2
- perl / perl5.13.3 – 5.13.3
- perl / perl5.13.4 – 5.13.4
- perl / perl5.13.5 – 5.13.5
- perl / perl5.13.6 – 5.13.6
- perl / perl5.13.7 – 5.13.7
- perl / perl5.13.8 – 5.13.8
- perl / perl5.13.9 – 5.13.9
- perl / perl5.13.10 – 5.13.10
- perl / perl5.13.11 – 5.13.11
- perl / perl5.11.0 – 5.11.0
- perl / perl5.11.1 – 5.11.1
- perl / perl5.11.2 – 5.11.2
- perl / perl5.11.3 – 5.11.3
- perl / perl5.11.4 – 5.11.4
- perl / perl5.11.5 – 5.11.5
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.0 – 5.12.0
- perl / perl5.12.1 – 5.12.1
- perl / perl5.12.1 – 5.12.1
- perl / perl5.12.1 – 5.12.1
- perl / perl5.12.2 – 5.12.2
- perl / perl5.12.2 – 5.12.2
- perl / perl5.12.3 – 5.12.3
- perl / perl5.12.3 – 5.12.3
- perl / perl5.12.3 – 5.12.3
- perl / perl5.12.3 – 5.12.3
Exploits & proofs of concept
- exploit-dbPerl 5.x - 'lc()' / 'uc()' TAINT Mode Protection Security Bypassby mmartinec
References
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=692844
- MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
- MAILING_LISThttp://lists.fedoraproject.org/pipermail/package-announce/2011-April/057891.html
- VENDOR_ADVISORYhttp://secunia.com/advisories/44168
- VENDOR_ADVISORYhttp://secunia.com/advisories/43921
- VENDOR_ADVISORYhttp://www.debian.org/security/2011/dsa-2265
- MAILING_LISThttp://lists.fedoraproject.org/pipermail/package-announce/2011-April/057971.html
- MISChttp://rt.perl.org/rt3/Public/Bug/Display.html?id=87336
- MISChttp://www.securityfocus.com/bid/47124
- MAILING_LISThttp://openwall.com/lists/oss-security/2011/04/04/35
- MISChttp://perl5.git.perl.org/perl.git/commit/539689e74a3bcb04d29e4cd9396de91a81045b99
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=692898
- VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2011:091
- MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/66528
- MAILING_LISThttp://openwall.com/lists/oss-security/2011/04/01/3
Updated 17m ago · 8 sources