Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 65.3%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 4.0
References
Products affected by CVE-2019-16215
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cpe:2.3:a:zulip:zulip_server:1.1.5
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cpe:2.3:a:zulip:zulip_server:1.2.0
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cpe:2.3:a:zulip:zulip_server:1.2.1
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cpe:2.3:a:zulip:zulip_server:1.3.0
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cpe:2.3:a:zulip:zulip_server:1.3.1
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cpe:2.3:a:zulip:zulip_server:1.3.10
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cpe:2.3:a:zulip:zulip_server:1.3.11
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cpe:2.3:a:zulip:zulip_server:1.3.12
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cpe:2.3:a:zulip:zulip_server:1.3.13
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cpe:2.3:a:zulip:zulip_server:1.3.2
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cpe:2.3:a:zulip:zulip_server:1.3.3
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cpe:2.3:a:zulip:zulip_server:1.3.4
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cpe:2.3:a:zulip:zulip_server:1.3.5
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cpe:2.3:a:zulip:zulip_server:1.3.6
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cpe:2.3:a:zulip:zulip_server:1.3.7
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cpe:2.3:a:zulip:zulip_server:1.3.8
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cpe:2.3:a:zulip:zulip_server:1.3.9
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cpe:2.3:a:zulip:zulip_server:1.4.0
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cpe:2.3:a:zulip:zulip_server:1.4.1
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cpe:2.3:a:zulip:zulip_server:1.4.2
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cpe:2.3:a:zulip:zulip_server:1.4.3
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cpe:2.3:a:zulip:zulip_server:1.5.0
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cpe:2.3:a:zulip:zulip_server:1.5.1
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cpe:2.3:a:zulip:zulip_server:1.5.2
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cpe:2.3:a:zulip:zulip_server:1.6.0
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cpe:2.3:a:zulip:zulip_server:1.7.0
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cpe:2.3:a:zulip:zulip_server:1.7.1
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cpe:2.3:a:zulip:zulip_server:1.7.2
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cpe:2.3:a:zulip:zulip_server:1.8.0
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cpe:2.3:a:zulip:zulip_server:1.8.1
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cpe:2.3:a:zulip:zulip_server:1.9.0
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cpe:2.3:a:zulip:zulip_server:1.9.1
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cpe:2.3:a:zulip:zulip_server:1.9.2
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cpe:2.3:a:zulip:zulip_server:2.0.0
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cpe:2.3:a:zulip:zulip_server:2.0.1
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cpe:2.3:a:zulip:zulip_server:2.0.2
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cpe:2.3:a:zulip:zulip_server:2.0.3
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cpe:2.3:a:zulip:zulip_server:2.0.4