XML External Entity Vulnerability in Atlassian Application Links
CVE-2017-18111

8.7HIGH

Key Information:

Vendor

Atlassian
Status
Application Links
Vendor
CVE Published:
29 March 2019

What is CVE-2017-18111?

The OAuthHelper component within Atlassian Application Links prior to version 5.0.10 and specific versions between 5.1.0 and 5.2.6 is susceptible to an XML External Entity (XXE) vulnerability. This flaw arises when processing XML documents from client OAuth requests, allowing attackers to exploit this weakness to probe internal network resources, read sensitive file contents, and potentially trigger out of memory exceptions, compromising system availability.

Affected Version(s)

Application Links < 5.0.10

Application Links 5.1.0

Application Links < 5.1.3

References

https://ecosystem.atlassian.net/browse/APL-1338
x_refsource_MISC

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.