medium6.5
CVE-2019-16215
The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Zulip | Zulip Server | before 2.0.5 |
Weakness classification
References
- NVD record
- CVE.org record
- https://blog.zulip.org/2019/09/11/zulip-server-2-0-5-security-release/
- https://github.com/zulip/zulip/commit/5797f013b3be450c146a4141514bda525f2f1b51
- https://blog.zulip.org/2019/09/11/zulip-server-2-0-5-security-release/
- https://github.com/zulip/zulip/commit/5797f013b3be450c146a4141514bda525f2f1b51