Shodan
Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-41115

Zulip is an open source team chat server. In affected versions Zulip allows organization administrators on a server to configure "linkifiers" that automatically create links from messages that users send, detected via arbitrary regular expressions. Malicious organization administrators could subject the server to a denial-of-service via regular expression complexity attacks; most simply, by configuring a quadratic-time regular expression in a linkifier, and sending messages that exploited it. A regular expression attempted to parse the user-provided regexes to verify that they were safe from ReDoS -- this was both insufficient, as well as _itself_ subject to ReDoS if the organization administrator entered a sufficiently complex invalid regex. Affected users should [upgrade to the just-released Zulip 4.7](https://zulip.readthedocs.io/en/latest/production/upgrade-or-modify.html#upgrading-to-a-release), or [`main`](https://zulip.readthedocs.io/en/latest/production/upgrade-or-modify.html#upgrading-from-a-git-repository).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 65.4%
CVSS Severity
CVSS v3 Score 4.3
CVSS v2 Score 4.0
Products affected by CVE-2021-41115
  • Zulip » Zulip » Version: N/A
    cpe:2.3:a:zulip:zulip:-
  • Zulip » Zulip » Version: 0.7.1
    cpe:2.3:a:zulip:zulip:0.7.1
  • Zulip » Zulip » Version: 1.0.11
    cpe:2.3:a:zulip:zulip:1.0.11
  • Zulip » Zulip » Version: 1.0.12
    cpe:2.3:a:zulip:zulip:1.0.12
  • Zulip » Zulip » Version: 1.0.13
    cpe:2.3:a:zulip:zulip:1.0.13
  • Zulip » Zulip » Version: 1.0.14
    cpe:2.3:a:zulip:zulip:1.0.14
  • Zulip » Zulip » Version: 1.0.15
    cpe:2.3:a:zulip:zulip:1.0.15
  • Zulip » Zulip » Version: 1.0.16
    cpe:2.3:a:zulip:zulip:1.0.16
  • Zulip » Zulip » Version: 1.0.17
    cpe:2.3:a:zulip:zulip:1.0.17
  • Zulip » Zulip » Version: 1.0.18
    cpe:2.3:a:zulip:zulip:1.0.18
  • Zulip » Zulip » Version: 1.0.19
    cpe:2.3:a:zulip:zulip:1.0.19
  • Zulip » Zulip » Version: 1.0.20
    cpe:2.3:a:zulip:zulip:1.0.20
  • Zulip » Zulip » Version: 1.0.21
    cpe:2.3:a:zulip:zulip:1.0.21
  • Zulip » Zulip » Version: 1.0.22
    cpe:2.3:a:zulip:zulip:1.0.22
  • Zulip » Zulip » Version: 1.0.24
    cpe:2.3:a:zulip:zulip:1.0.24
  • Zulip » Zulip » Version: 1.0.25
    cpe:2.3:a:zulip:zulip:1.0.25
  • Zulip » Zulip » Version: 1.0.26
    cpe:2.3:a:zulip:zulip:1.0.26
  • Zulip » Zulip » Version: 1.0.27
    cpe:2.3:a:zulip:zulip:1.0.27
  • Zulip » Zulip » Version: 1.0.29
    cpe:2.3:a:zulip:zulip:1.0.29
  • Zulip » Zulip » Version: 1.3.0
    cpe:2.3:a:zulip:zulip:1.3.0
  • Zulip » Zulip » Version: 1.3.1
    cpe:2.3:a:zulip:zulip:1.3.1
  • Zulip » Zulip » Version: 1.3.10
    cpe:2.3:a:zulip:zulip:1.3.10
  • Zulip » Zulip » Version: 1.3.11
    cpe:2.3:a:zulip:zulip:1.3.11
  • Zulip » Zulip » Version: 1.3.12
    cpe:2.3:a:zulip:zulip:1.3.12
  • Zulip » Zulip » Version: 1.3.13
    cpe:2.3:a:zulip:zulip:1.3.13
  • Zulip » Zulip » Version: 1.3.2
    cpe:2.3:a:zulip:zulip:1.3.2
  • Zulip » Zulip » Version: 1.3.3
    cpe:2.3:a:zulip:zulip:1.3.3
  • Zulip » Zulip » Version: 1.3.4
    cpe:2.3:a:zulip:zulip:1.3.4
  • Zulip » Zulip » Version: 1.3.5
    cpe:2.3:a:zulip:zulip:1.3.5
  • Zulip » Zulip » Version: 1.3.6
    cpe:2.3:a:zulip:zulip:1.3.6
  • Zulip » Zulip » Version: 1.3.7
    cpe:2.3:a:zulip:zulip:1.3.7
  • Zulip » Zulip » Version: 1.3.8
    cpe:2.3:a:zulip:zulip:1.3.8
  • Zulip » Zulip » Version: 1.3.9
    cpe:2.3:a:zulip:zulip:1.3.9
  • Zulip » Zulip » Version: 1.4.0
    cpe:2.3:a:zulip:zulip:1.4.0
  • Zulip » Zulip » Version: 1.4.1
    cpe:2.3:a:zulip:zulip:1.4.1
  • Zulip » Zulip » Version: 1.4.2
    cpe:2.3:a:zulip:zulip:1.4.2
  • Zulip » Zulip » Version: 1.4.3
    cpe:2.3:a:zulip:zulip:1.4.3
  • Zulip » Zulip » Version: 1.5.0
    cpe:2.3:a:zulip:zulip:1.5.0
  • Zulip » Zulip » Version: 1.5.1
    cpe:2.3:a:zulip:zulip:1.5.1
  • Zulip » Zulip » Version: 1.5.2
    cpe:2.3:a:zulip:zulip:1.5.2
  • Zulip » Zulip » Version: 1.6.0
    cpe:2.3:a:zulip:zulip:1.6.0
  • Zulip » Zulip » Version: 1.7.0
    cpe:2.3:a:zulip:zulip:1.7.0
  • Zulip » Zulip » Version: 1.7.1
    cpe:2.3:a:zulip:zulip:1.7.1
  • Zulip » Zulip » Version: 1.7.2
    cpe:2.3:a:zulip:zulip:1.7.2
  • Zulip » Zulip » Version: 1.8.0
    cpe:2.3:a:zulip:zulip:1.8.0
  • Zulip » Zulip » Version: 1.8.1
    cpe:2.3:a:zulip:zulip:1.8.1
  • Zulip » Zulip » Version: 1.9.0
    cpe:2.3:a:zulip:zulip:1.9.0
  • Zulip » Zulip » Version: 1.9.1
    cpe:2.3:a:zulip:zulip:1.9.1
  • Zulip » Zulip » Version: 1.9.2
    cpe:2.3:a:zulip:zulip:1.9.2
  • Zulip » Zulip » Version: 2.0.0
    cpe:2.3:a:zulip:zulip:2.0.0
  • Zulip » Zulip » Version: 2.0.1
    cpe:2.3:a:zulip:zulip:2.0.1
  • Zulip » Zulip » Version: 2.0.2
    cpe:2.3:a:zulip:zulip:2.0.2
  • Zulip » Zulip » Version: 2.0.3
    cpe:2.3:a:zulip:zulip:2.0.3
  • Zulip » Zulip » Version: 2.0.4
    cpe:2.3:a:zulip:zulip:2.0.4
  • Zulip » Zulip » Version: 2.0.5
    cpe:2.3:a:zulip:zulip:2.0.5
  • Zulip » Zulip » Version: 2.0.6
    cpe:2.3:a:zulip:zulip:2.0.6
  • Zulip » Zulip » Version: 2.0.7
    cpe:2.3:a:zulip:zulip:2.0.7
  • Zulip » Zulip » Version: 2.0.8
    cpe:2.3:a:zulip:zulip:2.0.8
  • Zulip » Zulip » Version: 2.1.0
    cpe:2.3:a:zulip:zulip:2.1.0
  • Zulip » Zulip » Version: 2.1.1
    cpe:2.3:a:zulip:zulip:2.1.1
  • Zulip » Zulip » Version: 2.1.2
    cpe:2.3:a:zulip:zulip:2.1.2
  • Zulip » Zulip » Version: 2.1.3
    cpe:2.3:a:zulip:zulip:2.1.3
  • Zulip » Zulip » Version: 2.1.33
    cpe:2.3:a:zulip:zulip:2.1.33
  • Zulip » Zulip » Version: 2.1.4
    cpe:2.3:a:zulip:zulip:2.1.4
  • Zulip » Zulip » Version: 2.1.5
    cpe:2.3:a:zulip:zulip:2.1.5
  • Zulip » Zulip » Version: 2.1.6
    cpe:2.3:a:zulip:zulip:2.1.6
  • Zulip » Zulip » Version: 2.1.7
    cpe:2.3:a:zulip:zulip:2.1.7
  • Zulip » Zulip » Version: 2.1.8
    cpe:2.3:a:zulip:zulip:2.1.8
  • Zulip » Zulip » Version: 2.2
    cpe:2.3:a:zulip:zulip:2.2
  • Zulip » Zulip » Version: 2.3.35
    cpe:2.3:a:zulip:zulip:2.3.35
  • Zulip » Zulip » Version: 2.7.39
    cpe:2.3:a:zulip:zulip:2.7.39
  • Zulip » Zulip » Version: 3.0
    cpe:2.3:a:zulip:zulip:3.0
  • Zulip » Zulip » Version: 3.0.40
    cpe:2.3:a:zulip:zulip:3.0.40
  • Zulip » Zulip » Version: 3.1
    cpe:2.3:a:zulip:zulip:3.1
  • Zulip » Zulip » Version: 3.1.41
    cpe:2.3:a:zulip:zulip:3.1.41
  • Zulip » Zulip » Version: 3.2
    cpe:2.3:a:zulip:zulip:3.2
  • Zulip » Zulip » Version: 3.2.42
    cpe:2.3:a:zulip:zulip:3.2.42
  • Zulip » Zulip » Version: 3.3
    cpe:2.3:a:zulip:zulip:3.3
  • Zulip » Zulip » Version: 3.3.43
    cpe:2.3:a:zulip:zulip:3.3.43
  • Zulip » Zulip » Version: 3.4
    cpe:2.3:a:zulip:zulip:3.4
  • Zulip » Zulip » Version: 4.0
    cpe:2.3:a:zulip:zulip:4.0
  • Zulip » Zulip » Version: 4.1
    cpe:2.3:a:zulip:zulip:4.1
  • Zulip » Zulip » Version: 4.2
    cpe:2.3:a:zulip:zulip:4.2
  • Zulip » Zulip » Version: 4.3
    cpe:2.3:a:zulip:zulip:4.3
  • Zulip » Zulip » Version: 4.4
    cpe:2.3:a:zulip:zulip:4.4
  • Zulip » Zulip » Version: 4.5
    cpe:2.3:a:zulip:zulip:4.5
  • Zulip » Zulip » Version: 4.6
    cpe:2.3:a:zulip:zulip:4.6


Products
Pricing
Contact Us

Shodan ® - All rights reserved