The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-94843 advisory.

  - Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0     through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in `MetaDataBuilder.checkSize` allows for     HTTP/2 HPACK header values to exceed their size limit. `MetaDataBuilder.java` determines if a header name     or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is     very large and huffman is true, the multiplication by 4 in line 295 will overflow, and length will become     negative. `(_size+length)` will now be negative, and the check on line 296 will not be triggered.
    Furthermore, `MetaDataBuilder.checkSize` allows for user-entered HPACK header value sizes to be negative,     potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by     2. This means that if a user provides a negative length value (or, more precisely, a length value which,     when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive     number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server.
    Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions     11.0.16, 10.0.16, and 9.4.53. There are no known workarounds. (CVE-2023-36478)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

Analytics

Atlassian Confluence < 7.19.20 / 7.20.x < 8.5.7 (CONFSERVER-94843)

high Nessus Plugin ID 192703

Version 1.2

Version 1.1

Version 1.0

Version 1.2 Jun 5, 2024, 10:55 AM Required Scan configuration ("Enable cgi scanning" set to "True") Plugin Feed: 202406051055
Version 1.1 May 24, 2024, 10:34 AM IAVM reference Plugin Feed: 202405241034
Version 1.0 Mar 29, 2024, 4:15 PM New Plugin Feed: 202403291615