NYUCCL psiTurk up to 3.2.0 psiturk/experiment.py mode special elements used in a template engine

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.73

Summaryinfo

A vulnerability, which was classified as critical, was found in NYUCCL psiTurk up to 3.2.0. The affected element is an unknown function of the file psiturk/experiment.py. Executing a manipulation of the argument mode can lead to improper neutralization of special elements used in a template engine. This vulnerability is handled as CVE-2021-4315. Additionally, an exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in NYUCCL psiTurk up to 3.2.0 and classified as critical. This vulnerability affects some unknown functionality of the file psiturk/experiment.py. The manipulation of the argument mode with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. The CWE definition for the vulnerability is CWE-1336. The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 01/27/2023 as 517. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-4315. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1221.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 3.2.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 47787e15cecd66f2aa87687bf852ae0194a4335f is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. The advisory contains the following remark:

Fixed an issue where users could pass arbitrary Python code to be executed on the server to the mode HTTP arg

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (VulDB): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper neutralization of special elements used in a template engine
CWE: CWE-1336 / CWE-791 / CWE-790
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: psiTurk 3.2.1
Patch: 47787e15cecd66f2aa87687bf852ae0194a4335f

Timelineinfo

01/27/2023 🔍
01/27/2023 +0 days 🔍
01/27/2023 +0 days 🔍
02/23/2023 +27 days 🔍

Sourcesinfo

Product: github.com

Advisory: 517
Status: Confirmed

CVE: CVE-2021-4315 (🔍)
GCVE (CVE): GCVE-0-2021-4315
GCVE (VulDB): GCVE-100-219676
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/27/2023 23:47
Updated: 02/23/2023 18:25
Changes: 01/27/2023 23:47 (48), 02/23/2023 18:18 (2), 02/23/2023 18:25 (28)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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