The OAuthHelper in Atlassian Application Links before version 5.0.10, from version 5.1.0 before version 5.1.3, and from version 5.2.0 before version 5.2.6 used an XML document builder that was vulnerable to XXE when consuming a client OAuth request. This allowed malicious oauth application linked applications to probe internal network resources by requesting internal locations, read the contents of files and also cause an out of memory exception affecting availability via an XML External Entity vulnerability.
Published 2019-03-29 14:29:00
Updated 2019-04-01 18:41:10
Source Atlassian
View at NVD,   CVE.org
Vulnerability category: XML external entity (XXE) injection

Exploit prediction scoring system (EPSS) score for CVE-2017-18111

0.14%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 49 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-18111

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.5
MEDIUM AV:N/AC:L/Au:S/C:P/I:N/A:P
8.0
4.9
NIST
8.7
HIGH CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H
2.3
5.8
NIST

CWE ids for CVE-2017-18111

  • The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-18111

Products affected by CVE-2017-18111

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