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CVE-2023-47642

4.3 · MEDIUM

Zulip is an open-source team collaboration tool.

Published Nov 16, 2023CWE-200EPSS 0.48%

Overview

CVE-2023-47642 is a medium-severity vulnerability. It was published on November 16, 2023 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Zulip is an open-source team collaboration tool. It was discovered by the Zulip development team that active users who had previously been subscribed to a stream incorrectly continued being able to use the Zulip API to access metadata for that stream. As a result, users who had been removed from a stream, but still had an account in the organization, could still view metadata for that stream (including the stream name, description, settings, and an email address used to send emails into the stream via the incoming email integration). This potentially allowed users to see changes to a stream’s metadata after they had lost access to the stream. This vulnerability has been addressed in version 7.5 and all users are advised to upgrade. There are no known workarounds for this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/zulip/zulip/commit/6336322d2f9bbccaacfc80cba83a3c62eefd5737GitHubgithub.com/zulip/zulip/security/advisories/GHSA-c9wc-65fh-9x8pGitHubgithub.com/zulip/zulip/commit/6336322d2f9bbccaacfc80cba83a3c62eefd5737GitHubgithub.com/zulip/zulip/security/advisories/GHSA-c9wc-65fh-9x8p

How CyberStrike helps

Frequently asked questions

What is CVE-2023-47642?

CVE-2023-47642 is a medium-severity vulnerability. It was published on November 16, 2023 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2023-47642?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-47642?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-47642?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-47642 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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