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Vulnerability record · CVE-2012-5377 · published 11 October 2012

CVE-2012-5377: Activestate activeperl vulnerability

Activestate · Activeperl

Untrusted search path vulnerability in the installation functionality in ActivePerl 5.16.1.1601, when installed in the top-level C:\ directory, allows local users to gain privileges via a Trojan horse DLL in the C:\Perl\Site\bin directory, which is added to the PATH system environment variable, as demonstrated by a Trojan horse wlbsctrl.dll file used by the "IKE and AuthIP IPsec Keying Modules" system service in Windows Vista SP1, Windows Server 2008 SP2, Windows 7 SP1, and Windows 8 Release Preview.

6.0 CVSS 2.0 Medium EPSS 1.3% · top 31.4%
6.0CVSS 2.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Untrusted search path vulnerability in the installation functionality in ActivePerl 5.16.1.1601, when installed in the top-level C:\ directory, allows local users to gain privileges via a Trojan horse DLL in the C:\Perl\Site\bin directory, which is added to the PATH system environment variable, as demonstrated by a Trojan horse wlbsctrl.dll file used by the "IKE and AuthIP IPsec Keying Modules" system service in Windows Vista SP1, Windows Server 2008 SP2, Windows 7 SP1, and Windows 8 Release Preview.

AV:L/AC:H/Au:S/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/86177
https://www.htbridge.com/advisory/HTB23108 Exploit
http://osvdb.org/86177
https://www.htbridge.com/advisory/HTB23108 Exploit

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0377Activestate activeperl vulnerabilityBuffer overflow in the win32_stat function for (1) ActiveState's ActivePerl and (2) Larry Wall's Perl before 5.8.3 allows local or remote attackers t…EPSS 6.8%7.5CVE-2004-2286Activestate activeperl vulnerabilityInteger overflow in the duplication operator in ActivePerl allows remote attackers to cause a denial of service (crash) and possibly execute arbitrar…EPSS 8.0%7.5CVE-2001-0815Activestate activeperl vulnerabilityBuffer overflow in PerlIS.dll in Activestate ActivePerl 5.6.1.629 and earlier allows remote attackers to execute arbitrary code via an HTTP request f…EPSS 14%4.6CVE-2006-2856Activestate activeperl vulnerabilityActiveState ActivePerl 5.8.8.817 for Windows configures the site/lib directory with "Users" group permissions for changing files, which allows local …EPSS 0.38%2.1CVE-2004-2022Activestate activeperl vulnerabilityActivePerl 5.8.x and others, and Larry Wall's Perl 5.6.1 and others, when running on Windows systems, allows attackers to cause a denial of service (…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2012-5377), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.