Discourse up to 3.0.0/3.1.0.beta1 redos
|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.
A vulnerability, which was classified as problematic, was found in Discourse up to 3.0.0/3.1.0.beta1. Affected is an unknown part. The manipulation with an unknown input leads to a redos vulnerability. CWE is classifying the issue as CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. This is going to have an impact on availability. CVE summarizes:
Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches, a malicious user can cause a regular expression denial of service using a carefully crafted user agent. This issue is patched in version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches. There are no known workarounds.
The weakness was shared 01/28/2023 as GHSA-mrfp-54hf-jrcv. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-23621 since 01/16/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1449.003.
Upgrading to version 3.0.1 or 3.1.0.beta2 eliminates this vulnerability. Applying the patch 6d92c3cbdac431db99a450f360a3048bb3aaf458 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.
CVSSv3VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔒
CNA Base Score: 8.6
CNA Vector (GitHub, Inc.): 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
CWE: CWE-1333 / CWE-400 / CWE-404
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceInterest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
0-Day Time: 🔒
Upgrade: Discourse 3.0.1/3.1.0.beta2
Timeline01/16/2023 CVE reserved
01/28/2023 +12 days Advisory disclosed
01/28/2023 +0 days VulDB entry created
02/23/2023 +26 days VulDB last update
CVE: CVE-2023-23621 (🔒)
EntryCreated: 01/28/2023 01:31 PM
Updated: 02/23/2023 07:10 PM
Changes: 01/28/2023 01:31 PM (50), 02/23/2023 07:10 PM (11)
Might our Artificial Intelligence support you?
Check our Alexa App!
No comments yet. Languages: en.
Please log in to comment.