CVE-2019-16215
First published: Wed Sep 18 2019(Updated: )
The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking. A user who is logged into the server could send a crafted message causing the server to spend an effectively arbitrary amount of CPU time and stall the processing of future messages.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zulip Server | <2.0.5 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2019-16215?
CVE-2019-16215 is a vulnerability in Zulip server before 2.0.5 that allows a crafted message to stall the processing of future messages.
What is the severity of CVE-2019-16215?
CVE-2019-16215 has a severity rating of 6.5 (Medium).
How does CVE-2019-16215 affect Zulip server?
CVE-2019-16215 affects Zulip server versions up to and excluding 2.0.5.
How can I fix CVE-2019-16215?
To fix CVE-2019-16215, upgrade your Zulip server to version 2.0.5 or higher.
Where can I find more information about CVE-2019-16215?
You can find more information about CVE-2019-16215 in the Zulip blog post and the GitHub commit linked in the references section.
- agent/references
- agent/type
- agent/softwarecombine
- agent/severity
- agent/remedy
- agent/weakness
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/author
- vendor/zulip
- canonical/zulip server