CVE intelligence and bounded remediation
CVE-2020-29453 — Atlassian Data Center security vulnerability
The CachingResourceDownloadRewriteRule class in Jira Server and Jira Data Center before version 8.5.11, from 8.6.0 before 8.13.3, and from 8.14.0 before 8.15.0 allowed unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories via an incorrect path access check.
- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Published
- 2021-02-22
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-22
Affected products
- atlassian / data_center
- atlassian / jira_data_center
- atlassian / jira_server
Showing 3 representative product identities from 6 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.
Matched remediation archetype
Path traversal, unsafe upload, and file handling
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Check exposure
- Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
- Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
- Review canonicalization and containment checks across supported operating systems and storage backends.
Remediate safely
- Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
- Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
- Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.
Authoritative sources
Complete CVE record and remediation plan
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