6.5

CVE-2019-16215

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Zulip ≫ Zulip Server Version < 2.0.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.25% 0.655
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NIST 4 8 2.9
AV:N/AC:L/Au:S/C:N/I:N/A:P
CWE-1333 Inefficient Regular Expression Complexity

The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

https://blog.zulip.org/2019/09/11/zulip-server-2-0-5-security-release/
Vendor Advisory
https://github.com/zulip/zulip/commit/5797f013b3be450c146a4141514bda525f2f1b51
Patch
Third Party Advisory