CPANSA-Encode-2021-01: Encode vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2021-07-17T00:00:00 Engine CSAF Perl Toolkit 0.26
Current release date 2021-07-17T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score 7.8 Severity
Original language Language en
Also referred to

Vulnerability Description

Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

Vulnerabilities

CVE-2021-36770

Vulnerability Description

Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

Weakness CWE-427 : Uncontrolled Search Path Element

Product status

Known affected
Product Score
Encode greater than or equal 3.05 and less than or equal 3.11
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 7.8 High
2.0 AV:N/AC:M/Au:N/C:P/I:P/A:P 6.8 Medium
Fixed

giterlizzi

Namespace: https://github.com/giterlizzi/

gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Sat Jul 17 00:00:00 2021 First release

Sharing rules

TLP:WHITE
For the TLP version see: https://www.first.org/tlp/