QID 730343

Date Published: 2022-02-07

QID 730343: Atlassian Bitbucket Server and Data Center Code Injection Vulnerability (CVE-2021-42574)

Bitbucket Server and Data Center is vulnerable to CVE-2021-42574 in which Unicode bidirectional override characters ie these special characters are typically not displayed by the browser or code editors but can affect the meaning of the source code when it is processed by a compiler or an interpreter.

Affected Bitbucket Data Center Versions

All version prior to 6.10.14
Version from 7.0.0 prior to 7.5.2(inclusive)
Version from 7.6.x prior to 7.6.10
Version from 7.7.0 prior to 7.16.1(inclusive)
Version from 7.17.x prior to 7.17.1
Detection Logic:

QID checks for the vulnerable versions of Bitbucket Server via GET login request.

Unicode bidirectional override characters and can allow malicious code to be hidden.

  • CVSS V3 rated as Critical - 8.3 severity.
  • CVSS V2 rated as Medium - 5.1 severity.
    • Solution
    Vendor has released fix to this issue. Refer to Bitbucket Server Data Center Download
    Vendor References

    CVEs related to QID 730343

    CVE-2021-42574 |
    Software Advisories
    Advisory ID Software Component Link
    CVE-2021-42574 URL Logo confluence.atlassian.com/security/cve-2021-42574-unrendered-unicode-bidirectional-override-characters-in-cloud-sites-1086420599.html
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