Silverstripe uses TinyMCE which allows svg files linked in object tags
The advisory, in context
Impact
TinyMCE v6 has a configuration value convert_unsafe_embeds set to false which allows svg files containing javascript to be used in <object> or <embed> tags, which can be used as a vector for XSS attacks.
Note that <embed> tags are not allowed by default.
After patching the default value of convert_unsafe_embeds will be set to true. This means that <object> tags will be converted to iframes instead the next time the page is saved, which may break any pages that rely upon previously saved <object> tags. Developers can override this configuration if desired to revert to the original behaviour.
We reviewed the potential impact of this vulnerability within the context of Silverstripe CMS. We concluded this is a medium impact vulnerability given how TinyMCE is used by Silverstripe CMS.
References:
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
Earlier releases before 5.2.16
Fixed in 5.2.16
425 explicitly affected versions
2.4.10, 2.4.11, 2.4.12, 2.4.13, 2.4.9, 2.5.0, 3.0.10, 3.0.10-rc1, 3.0.11, 3.0.11-rc1, 3.0.12, 3.0.13, 3.0.14, 3.0.2.1, 3.0.3, 3.0.3-rc1, 3.0.3-rc2, 3.0.4, 3.0.5, 3.0.6, 3.0.6-rc1, 3.0.6-rc2, 3.0.7, 3.0.7-rc1, 3.0.8, 3.0.9, 3.0.9-rc1, 3.1.0, 3.1.0-beta1, 3.1.0-beta2, 3.1.0-beta3, 3.1.0-rc1, 3.1.0-rc2, 3.1.0-rc3, 3.1.1, 3.1.10, 3.1.10-rc1, 3.1.10-rc2, 3.1.11, 3.1.11-rc1, 3.1.12, 3.1.13, 3.1.13-rc1, 3.1.14, 3.1.14-rc1, 3.1.15, 3.1.16, 3.1.16-rc1, 3.1.17, 3.1.17-rc1, 3.1.17-rc2, 3.1.18, 3.1.18-rc1, 3.1.18-rc2, 3.1.19, 3.1.19-rc1, 3.1.2, 3.1.2-rc1, 3.1.20, 3.1.20-rc1, 3.1.20-rc2, 3.1.21, 3.1.3, 3.1.3-rc1, 3.1.3-rc2, 3.1.4, 3.1.4-rc1, 3.1.5, 3.1.5-rc1, 3.1.6, 3.1.6-rc1, 3.1.6-rc2, 3.1.6-rc3, 3.1.7, 3.1.7-rc1, 3.1.8, 3.1.9, 3.1.9-rc1, 3.2.0, 3.2.0-beta1, 3.2.0-beta2, 3.2.0-rc1, 3.2.0-rc2, 3.2.1, 3.2.1-rc1, 3.2.1-rc2, 3.2.2, 3.2.2-rc1, 3.2.2-rc2, 3.2.3, 3.2.3-rc1, 3.2.3-rc2, 3.2.4, 3.2.4-rc1, 3.2.5, 3.2.5-rc1, 3.2.5-rc2, 3.2.6, 3.3.0, 3.3.0-beta1, 3.3.0-rc1, 3.3.0-rc2, 3.3.0-rc3, 3.3.1, 3.3.1-rc1, 3.3.1-rc2, 3.3.2, 3.3.2-rc1, 3.3.3, 3.3.3-rc1, 3.3.3-rc2, 3.3.4, 3.4.0, 3.4.0-rc1, 3.4.1, 3.4.1-rc1, 3.4.1-rc2, 3.4.2, 3.4.3, 3.4.3-rc1, 3.4.4, 3.4.4-rc1, 3.4.5, 3.4.5-rc1, 3.4.6, 3.4.6-rc1, 3.4.6-rc2, 3.5.0, 3.5.0-rc1, 3.5.0-rc2, 3.5.0-rc3, 3.5.1, 3.5.1-rc1, 3.5.1-rc2, 3.5.2, 3.5.2-rc1, 3.5.3, 3.5.3-rc1, 3.5.4, 3.5.4-rc1, 3.5.5, 3.5.5-beta1, 3.5.5-beta2, 3.5.6, 3.5.6-rc1, 3.5.7, 3.5.8, 3.5.8-rc1, 3.6.0, 3.6.0-beta1, 3.6.0-beta2, 3.6.0-rc1, 3.6.1, 3.6.1-alpha2, 3.6.2, 3.6.2-beta1, 3.6.2-beta2, 3.6.3, 3.6.3-rc2, 3.6.4, 3.6.5, 3.6.6, 3.6.6-rc1, 3.6.7, 3.6.8, 3.7.0, 3.7.1, 3.7.1-rc1, 3.7.2, 3.7.3, 3.7.4, 3.7.5, 3.7.6, 3.7.7, 4.0.0, 4.0.0-alpha1, 4.0.0-alpha2, 4.0.0-alpha3, 4.0.0-alpha4, 4.0.0-alpha5, 4.0.0-alpha6, 4.0.0-alpha7, 4.0.0-beta1, 4.0.0-beta2, 4.0.0-beta3, 4.0.0-beta4, 4.0.0-rc1, 4.0.0-rc2, 4.0.0-rc3, 4.0.1, 4.0.1-rc1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.1.0, 4.1.0-rc1, 4.1.0-rc2, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.10.0, 4.10.0-beta1, 4.10.0-rc1, 4.10.1, 4.10.10, 4.10.11, 4.10.2, 4.10.3, 4.10.4, 4.10.5, 4.10.6, 4.10.7, 4.10.8, 4.10.9, 4.11.0, 4.11.0-beta1, 4.11.0-beta2, 4.11.0-beta3, 4.11.0-rc1, 4.11.1, 4.11.10, 4.11.11, 4.11.12, 4.11.13, 4.11.14, 4.11.15, 4.11.16, 4.11.2, 4.11.3, 4.11.4, 4.11.5, 4.11.6, 4.11.7, 4.11.8, 4.11.9, 4.12.0, 4.12.0-beta1, 4.12.0-rc1, 4.12.1, 4.12.2, 4.12.3, 4.12.4, 4.12.5, 4.12.6, 4.12.7, 4.13.0, 4.13.0-beta1, 4.13.0-rc1, 4.13.1, 4.13.10, 4.13.11, 4.13.12, 4.13.13, 4.13.14, 4.13.15, 4.13.16, 4.13.17, 4.13.18, 4.13.19, 4.13.2, 4.13.20, 4.13.21, 4.13.22, 4.13.23, 4.13.24, 4.13.25, 4.13.26, 4.13.27, 4.13.28, 4.13.29, 4.13.3, 4.13.30, 4.13.31, 4.13.32, 4.13.33, 4.13.34, 4.13.35, 4.13.36, 4.13.37, 4.13.38, 4.13.39, 4.13.4, 4.13.40, 4.13.41, 4.13.42, 4.13.43, 4.13.44, 4.13.5, 4.13.6, 4.13.7, 4.13.8, 4.13.9, 4.2.0, 4.2.0-beta1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.3.0, 4.3.0-rc1, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.4.0, 4.4.0-rc1, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.4.5, 4.4.6, 4.4.7, 4.5.0, 4.5.0-alpha1, 4.5.0-rc1, 4.5.0-rc2, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.6.0, 4.6.0-beta1, 4.6.0-rc1, 4.6.1, 4.6.2, 4.7.0, 4.7.0-beta1, 4.7.0-rc1, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.8.0, 4.8.0-beta1, 4.8.0-rc1, 4.8.1, 4.9.0, 4.9.0-alpha1, 4.9.0-beta1, 4.9.0-rc1, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 5.0.0, 5.0.0-alpha1, 5.0.0-beta1, 5.0.0-beta2, 5.0.0-beta3, 5.0.0-rc1, 5.0.1, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.0.17, 5.0.18, 5.0.19, 5.0.2, 5.0.20, 5.0.21, 5.0.22, 5.0.23, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.1.0, 5.1.0-beta1, 5.1.0-rc1, 5.1.1, 5.1.10, 5.1.11, 5.1.12, 5.1.13, 5.1.14, 5.1.15, 5.1.16, 5.1.17, 5.1.18, 5.1.19, 5.1.2, 5.1.20, 5.1.21, 5.1.22, 5.1.23, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.2.0, 5.2.0-beta1, 5.2.0-rc1, 5.2.1, 5.2.10, 5.2.11, 5.2.12, 5.2.13, 5.2.14, 5.2.15, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
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],
"type": "ECOSYSTEM"
}
],
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}References
- https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-52cw-pvq9-9m5v
- https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2024-001.yaml
- https://github.com/advisories/GHSA-5359-pvf2-pw78
- https://github.com/silverstripe/silverstripe-framework
- https://www.silverstripe.org/download/security-releases/ss-2024-001