VDB-171487 · CVE-2021-28834 · GCVE-0-2021-28834

Kramdown up to 2.3.0 Route Formatter Rouge::Formatters privilege escalation

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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Kramdown up to 2.3.0. This affects the function Rouge::Formatters of the component Route Formatter Handler. This manipulation causes an unknown weakness. This vulnerability is tracked as CVE-2021-28834. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Kramdown up to 2.3.0. Affected by this vulnerability is the function Rouge::Formatters of the component Route Formatter Handler. The impact remains unknown.

The weakness was disclosed 03/19/2021. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2021-28834. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.3.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at gitlab.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Kramdown

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kramdown 2.3.1
Patch: gitlab.com

Timelineinfo

03/19/2021 🔍
03/19/2021 +0 days 🔍
03/19/2021 +0 days 🔍
04/03/2021 +15 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-28834 (🔍)
GCVE (CVE): GCVE-0-2021-28834
GCVE (VulDB): GCVE-100-171487

Entryinfo

Created: 03/19/2021 12:33
Updated: 04/03/2021 08:50
Changes: 03/19/2021 12:33 (38), 04/03/2021 08:45 (5), 04/03/2021 08:50 (18)
Complete: 🔍
Cache ID: 216::103