VDB-183390 · CVE-2021-3828 · GCVE-0-2021-3828

nltk incorrect regex

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in nltk and classified as critical. This impacts an unknown function. The manipulation results in incorrect regex. This vulnerability is known as CVE-2021-3828. It is possible to launch the attack remotely. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in nltk (the affected version is unknown). It has been classified as critical. Affected is an unknown code. The manipulation with an unknown input leads to a incorrect regex vulnerability. CWE is classifying the issue as CWE-185. The product specifies a regular expression in a way that causes data to be improperly matched or compared. This is going to have an impact on availability.

The weakness was published 09/27/2021 as 277711ab1dec729e626b27aab6fa35ea5efbd7e6. The advisory is available at huntr.dev. This vulnerability is traded as CVE-2021-3828 since 09/24/2021. The technical details are unknown and an exploit is not available.

Applying the patch 277711ab1dec729e626b27aab6fa35ea5efbd7e6 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Name

nltk

License

open-source

Website

Product: https://github.com/nltk/nltk/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (huntr.dev): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Incorrect regex
CWE: CWE-185 / CWE-697
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 277711ab1dec729e626b27aab6fa35ea5efbd7e6

Timelineinfo

09/24/2021 🔍
09/27/2021 +3 days 🔍
09/27/2021 +0 days 🔍
10/02/2021 +5 days 🔍

Sourcesinfo

Product: github.com

Advisory: 277711ab1dec729e626b27aab6fa35ea5efbd7e6
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3828 (🔍)
GCVE (CVE): GCVE-0-2021-3828
GCVE (VulDB): GCVE-100-183390

Entryinfo

Created: 09/27/2021 17:31
Updated: 10/02/2021 16:53
Changes: 09/27/2021 17:31 (48), 10/02/2021 16:53 (2)
Complete: 🔍
Cache ID: 216::103