Perl 5.x - 'lc()' / 'uc()' TAINT Mode Protection Security Bypass
| Reporter | Title | Published | Views | Family All 59 |
|---|---|---|---|---|
 | The vulnerability of the Perl interpreter, allowing attackers to inject arbitrary code | 3 Nov 201600:00 | – | bdu_fstec |
 | CVE-2011-1487 | 30 Mar 201100:00 | – | circl |
 | CVE-2011-1487 | 11 Apr 201118:00 | – | cve |
 | CVE-2011-1487 | 11 Apr 201118:00 | – | cvelist |
 | [SECURITY] [DSA 2265-1] perl security update | 20 Jun 201118:15 | – | debian |
 | CVE-2011-1487 | 11 Apr 201118:00 | – | debiancve |
 | Debian DSA-2265-1 : perl - lack of tainted flag propagation | 21 Jun 201100:00 | – | nessus |
| Fedora 14 : perl-5.12.3-143.fc14 (2011-4610) | 14 Apr 201100:00 | – | nessus |
| Fedora 15 : perl-5.12.3-156.fc15 (2011-4631) | 18 Apr 201100:00 | – | nessus |
| Fedora 13 : perl-5.10.1-123.fc13 (2011-4918) | 25 Apr 201100:00 | – | nessus |
10
source: https://www.securityfocus.com/bid/47124/info
Perl is prone to a security-bypass weakness that occurs when laundering tainted input.
Attackers can leverage this issue to bypass security checks in perl applications that rely on TAINT mode protection functionality. This opens such applications up to potential attacks that take advantage of the software's failure to properly sanitize user-supplied input.
The following example input is available:
> perl -Te 'use Scalar::Util qw(tainted); $t=$0; $u=lc($t); printf("%d,%d\n",tainted($t),tainted($u))'
> perl -Te 'use Scalar::Util qw(tainted); $t=$0; $u=lc($t); printf("%d,%d\n",tainted($t),tainted($u))'Data
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16 Dec 2014 00:00Current
5.1Medium risk
Vulners AI Score5.1
CVSS 25
EPSS0.08712