Vulnerability identifier: #VU34175

Vulnerability risk: Medium

CVSSv3.1: 5.7 [AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20418

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Jira Software
Client/Desktop applications / Other client software

Vendor: Atlassian

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can prevent users from accessing the instance via an Application Denial of Service vulnerability in the /rendering/wiki endpoint.

Mitigation
Update to version 8.8.0.

Vulnerable software versions

Jira Software: 8.0.0 - 8.0.4, 8.1.0 - 8.1.3, 8.2.0 - 8.2.6, 8.3.0 - 8.3.5, 8.4.0 - 8.4.3, 8.5.0 - 8.5.5, 8.6.0 - 8.6.1, 8.7.0 - 8.7.1

---

External links
http://jira.atlassian.com/browse/JRASERVER-70943

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.