File::Temp on Perl _is_safe link following

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in File::Temp on Perl. Impacted is the function _is_safe. The manipulation leads to link following. This vulnerability is uniquely identified as CVE-2011-4116. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in File::Temp on Perl (version now known). It has been rated as critical. This issue affects the function _is_safe. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is integrity, and availability. The summary by CVE is:

_is_safe in the File::Temp module for Perl does not properly handle symlinks.

The weakness was disclosed 04/22/2023 as 14. The advisory is shared at github.com. The identification of this vulnerability is CVE-2011-4116 since 10/18/2011. Technical details as well as a public exploit are known.

The exploit is available at openwall.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 217423 (Linux Distros Unpatched Vulnerability : CVE-2011-4116), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (217423). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 217423
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2011-4116

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/18/2011 🔍
04/22/2023 +4204 days 🔍
04/22/2023 +0 days 🔍
08/04/2025 +835 days 🔍

Sourcesinfo

Advisory: 14
Status: Confirmed

CVE: CVE-2011-4116 (🔍)
GCVE (CVE): GCVE-0-2011-4116
GCVE (VulDB): GCVE-100-227177
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/22/2023 09:08
Updated: 08/04/2025 21:59
Changes: 04/22/2023 09:08 (57), 03/04/2025 08:57 (17), 08/04/2025 21:59 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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