CVE-2019-20897: Malicious File Upload

Q: What is CVE-2019-20897?

CVE-2019-20897 is a vulnerability in Atlassian Jira Server and Data Center that allows remote attackers to achieve Denial of Service via a crafted PNG file.

Q: How can remote attackers exploit CVE-2019-20897?

Remote attackers can exploit CVE-2019-20897 by uploading a crafted PNG file using the avatar upload feature in the affected versions of Atlassian Jira Server and Data Center.

Q: What is the severity of CVE-2019-20897?

CVE-2019-20897 has a severity rating of 6.5 (medium).

Q: Is there a fix available for CVE-2019-20897?

Yes, the fix is available in versions 8.5.4, 8.6.2, and 8.7.1 of Atlassian Jira Server and Data Center.

Published Jul 13, 2020

Updated

The avatar upload feature in affected versions of Atlassian Jira Server and Data Center allows remote attackers to achieve Denial of Service via a crafted PNG file. The affected versions are before version 8.5.4, from version 8.6.0 before 8.6.2, and from version 8.7.0 before 8.7.1.

Affected Software

6 affected components

Atlassian Jira<8.5.4

Atlassian Jira Data Center>=8.6.0<8.6.2

Atlassian Jira Data Center>=8.7.0<8.7.1

Atlassian Jira Server>=8.6.0<8.6.2

Atlassian Jira Server>=8.7.0<8.7.1

Atlassian Jira Software Data Center<8.5.4

Remediation

Patch Available

https://jira.atlassian.com/browse/JRASERVER-70813

Event History

Jul 13, 2020

CVE Published

via MITRE·12:50 AM

Data Sourced

via MITRE·12:50 AM

DescriptionWeakness

Frequently Asked Questions

What is CVE-2019-20897?

CVE-2019-20897 is a vulnerability in Atlassian Jira Server and Data Center that allows remote attackers to achieve Denial of Service via a crafted PNG file.

Which versions of Atlassian Jira Server and Data Center are affected?

The affected versions are before version 8.5.4, from version 8.6.0 before 8.6.2, and from version 8.7.0 before 8.7.1.

How can remote attackers exploit CVE-2019-20897?