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CVE-2017-0881

4.3 · MEDIUM

An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a p…

Published Mar 28, 2017CWE-200EPSS 1.10%

Overview

CVE-2017-0881 is a medium-severity vulnerability. It was published on March 28, 2017 and has a CVSS 3.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.0 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

An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server.

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

Refwww.securityfocus.com/bid/97159GitHubgithub.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255fRefgroups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJRefwww.securityfocus.com/bid/97159GitHubgithub.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255fRefgroups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ

How CyberStrike helps

Frequently asked questions

What is CVE-2017-0881?

CVE-2017-0881 is a medium-severity vulnerability. It was published on March 28, 2017 and has a CVSS 3.0 base score of 4.3 (MEDIUM).

How severe is CVE-2017-0881?

This vulnerability has a CVSS 3.0 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-2017-0881?

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-2017-0881?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-0881 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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