Auth bypass in Atlassian Application Links
CVE-2019-20105
The EditApplinkServlet resource in the Atlassian Application Links plugin before version 5.4.20, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.1, and from version 7.1.0 before version 7.1.3 allows remote attackers who have obtained access to administrator's session to access the EditApplinkServlet resource without needing to re-authenticate to pass "WebSudo" in products that support "WebSudo" through an improper access control vulnerability.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Atlassian Application Links — versions unspecified, 6.0.0, unspecified
- Atlassian Application Links — versions 7.0.0
- Atlassian Jira Server And Data Center — versions 7.13.8, unspecified, 8.4.2
Weakness classification (CWE)
References
- ecosystem.atlassian.net/browse/APL-1391 (Vendor Advisory)
- jira.atlassian.com/browse/JRASERVER-70526 (Vendor Advisory)
Frequently asked questions
- What is CVE-2019-20105?
- CVE-2019-20105 is a medium-severity vulnerability in Atlassian Application Links, classified under Missing Authentication for Critical Function. CVSS score: 4.9/10. Published 2020-03-17.
- How severe is CVE-2019-20105?
- Medium severity. CVSS v3 base score is 4.9 out of 10.