CVE-2023-39349 : Exploit Details and Defense Strategies

A vulnerability has been discovered in Sentry that could allow an attacker to escalate privileges via the ApiTokensEndpoint.

Understanding CVE-2023-39349

This section will delve into the details of the CVE-2023-39349 vulnerability in Sentry.

What is CVE-2023-39349?

Sentry, an error tracking and performance monitoring platform, is impacted by a privilege escalation vulnerability. Attackers with access to a token with limited scopes can exploit this issue to retrieve a list of all user-created tokens, including those with higher scopes.

The Impact of CVE-2023-39349

The vulnerability poses a high risk with a CVSS v3.1 base score of 8.1, highlighting the severity of the issue. It could lead to unauthorized access to sensitive data and compromise the integrity of the system.

Technical Details of CVE-2023-39349

In this section, we will explore the technical aspects of CVE-2023-39349.

Vulnerability Description

Between versions 22.1.0 and 23.7.2 of Sentry, attackers could query

/api/0/api-tokens/

to retrieve all user-created tokens, potentially leading to misuse of tokens with higher privileges. The issue has been addressed in version 23.7.2.

Affected Systems and Versions

The vulnerability affects Sentry versions between 22.1.0 and 23.7.2, putting systems within this range at risk of exploitation.

Exploitation Mechanism

Attackers exploit this vulnerability by accessing a token with limited scopes and querying the specific endpoint to gather information on user-created tokens.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-39349, immediate actions and long-term security practices need to be implemented.

Immediate Steps to Take

Users are advised to update to version 23.7.2 of Sentry or self-hosted instances to patch the vulnerability. Additionally, rotating user authentication tokens is recommended.

Long-Term Security Practices

Implementing robust access control mechanisms, monitoring token usage, and staying updated on security patches are crucial for maintaining system security.

Patching and Updates

Ensure regular updates to the latest version of Sentry and self-hosted instances to safeguard against known vulnerabilities and apply security patches promptly.