CVE-2023-33176
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-33176
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-33176.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-33176
- Related
- Published
- 2023-06-26T20:15:10Z
- Modified
- 2025-01-08T15:00:15.524219Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
BigBlueButton is an open source virtual classroom designed to help teachers teach and learners learn. In affected versions are affected by a Server-Side Request Forgery (SSRF) vulnerability. In an
insertDocumentAPI request the user is able to supply a URL from which the presentation should be downloaded. This URL was being used without having been successfully validated first. An update to thefollowRedirectmethod in thePresentationUrlDownloadServicehas been made to validate all URLs to be used for presentation download. Two new propertiespresentationDownloadSupportedProtocolsandpresentationDownloadBlockedHostshave also been added tobigbluebutton.propertiesto allow administrators to define what protocols a URL must use and to explicitly define hosts that a presentation cannot be downloaded from. All URLs passed toinsertDocumentmust conform to the requirements of the two previously mentioned properties. Additionally, these URLs must resolve to valid addresses, and these addresses must not be local or loopback addresses. There are no workarounds. Users are advised to upgrade to a patched version of BigBlueButton. - References
-
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3q22-hph2-cff7
- https://github.com/bigbluebutton/bigbluebutton/commit/43394dade595d0707384e4878357901537352415
- https://github.com/bigbluebutton/bigbluebutton/commit/b18aff32e65a47f1eb2c800e86dcfc7a8fb05e71
- https://github.com/bigbluebutton/bigbluebutton/pull/18045
- https://github.com/bigbluebutton/bigbluebutton/pull/18052
Affected packages
Git / github.com/bigbluebutton/bigbluebutton
Affected ranges
- Type
- GIT
- Repo
- https://github.com/bigbluebutton/bigbluebutton
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixedFixed