CVE-2021-21265
This has been addressed in version 1.1.2 by adding a feature to allow a set of trusted hosts to be specified in the application.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October before version 1.1.2, when running on poorly configured servers (i.e. the server routes any request, regardless of the HOST header to an October CMS instance) the potential exists for Host Header Poisoning attacks to succeed. This has been addressed in version 1.1.2 by adding a feature to allow a set of trusted hosts to be specified in the application. As a workaround one may set the configuration setting cms.linkPolicy to force.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.75% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-644
- Affected
- octobercms/october
- Source
- security-advisories@github.com
References
- https://github.com/octobercms/library/commit/f29865ae3db7a03be7c49294cd93980ec457f10d
- https://github.com/octobercms/library/commit/f86fcbcd066d6f8b939e8fe897409d152b11c3c6Patch, Third Party Advisory
- https://github.com/octobercms/october/commit/555ab61f2313f45d7d5d138656420ead536c5d30
- https://github.com/octobercms/october/commit/f638d3f78cfe91d7f6658820f9d5e424306a3db0Patch, Third Party Advisory
- https://github.com/octobercms/october/security/advisories/GHSA-xhfx-hgmf-v6vpPatch, Third Party Advisory
- https://packagist.org/packages/october/backend
- https://github.com/octobercms/library/commit/f86fcbcd066d6f8b939e8fe897409d152b11c3c6Patch, Third Party Advisory
- https://github.com/octobercms/october/commit/f638d3f78cfe91d7f6658820f9d5e424306a3db0Patch, Third Party Advisory
- https://github.com/octobercms/october/security/advisories/GHSA-xhfx-hgmf-v6vpPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.