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Description: Impact
This is not a vulnerability in the code per se, but included platform.sh Varnish VCL templates and Apache/Nginx vhost templates enable compression of API and JSON messages. This is a potential case of the BREACH vulnerability, which affects HTTP compression, where secrets can be extracted through carefully crafted requests. The fix disables compression in these templates. Please make sure to make the same change in your configuration files, see the release notes for specific instructions.
Patches
See "Patched versions".
v1.0: https://github.com/ibexa/post-install/commit/d91cc02623dd3263a99a94ace133c95e48909e5d
v4.6: https://github.com/ibexa/post-install/commit/ae7c3c2081a862c75b90828f08bd74436ceb8fe8
Workarounds
Make sure HTTP compression is disabled for REST API requests and other communication that might contain secrets.
References
Advisory: https://developers.ibexa.co/security-advisories/ibexa-sa-2024-006-vulnerabilities-in-content-name-pattern-commerce-shop-and-varnish-vhost-templates
Release notes v3.3: https://doc.ibexa.co/en/latest/update_and_migration/from_3.3/update_from_3.3/#v3341
Release notes v4.6: https://doc.ibexa.co/en/latest/update_and_migration/from_4.6/update_from_4.6/#v4614
https://github.com/ezsystems/ezplatform-http-cache/security/advisories/GHSA-mgfg-7533-7jf6
https://github.com/ibexa/http-cache/security/advisories/GHSA-fh7v-q458-7vmw
https://www.breachattack.com/
References
https://github.com/ezsystems/ezplatform-http-cache/security/advis...
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