CVE-2023-51451 Explained : Impact and Mitigation

This article provides detailed information about CVE-2023-51451, a vulnerability in Symbolicator service used in Sentry.

Understanding CVE-2023-51451

CVE-2023-51451 refers to a Server-Side Request Forgery (SSRF) vulnerability in Symbolicator service via an invalid protocol.

What is CVE-2023-51451?

Symbolicator is a service utilized in Sentry. The vulnerability allowed an attacker to manipulate Symbolicator to send GET HTTP requests to arbitrary URLs with internal IP addresses through an invalid protocol. This could potentially expose responses via Symbolicator's API.

The Impact of CVE-2023-51451

In affected instances, sensitive data could be exposed through the Sentry API and user interface, particularly if the attacker possesses a registered account.

Technical Details of CVE-2023-51451

The following technical details outline the vulnerability:

Vulnerability Description

The SSRF vulnerability in Symbolicator allowed attackers to send requests to internal IPs through an invalid protocol, potentially exposing sensitive data.

Affected Systems and Versions

Vendor: getsentry Product: symbolicator Affected Versions: >= 0.3.3, < 23.12.1

Exploitation Mechanism

The exploit involved manipulating Symbolicator to send HTTP requests to internal IPs using an invalid protocol.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-51451, consider the following steps:

Immediate Steps to Take

Update Symbolicator to release 23.12.1 or later.
Disable JS processing by adjusting settings in

Organization Settings > Security & Privacy

.
Disable untrusted public repositories under

Project Settings > Debug Files

.
If unnecessary, consider disabling Symbolicator completely in

config.yml

.

Long-Term Security Practices

Regularly update software to the latest releases.
Implement secure coding practices.

Patching and Updates

Ensure timely application of patches and updates from getsentry, including self-hosted releases and Symbolicator updates.