It had been discovered that Magento reveals HTTPOnly admin session cookie in the response of successful file upload in admin. Because the response content type was JSON, it was possible that attacker could steal admin session cookie by exploiting any XSS present in admin panel. Vulnerable file upload sections are in CMS, Catalog and Downloadable modules.
Part of update Magento 2.2.6 and 2.1.15 Security Update
This vulnerability affects the following application versions:
- Magento 0.74.0-beta13
- Magento 0.74.0-beta14
- Magento 0.74.0-beta15
- Magento 0.74.0-beta16
- Magento 1.0.0-beta
- Magento 1.0.0-beta2
- Magento 1.0.0-beta3
- Magento 1.0.0-beta4
- Magento 1.0.0-beta5
- Magento 1.0.0-beta6
- Magento 2.0.0
- Magento 2.0.0-rc
- Magento 2.0.0-rc2
- Magento 2.0.1
- Magento 2.0.2
- Magento 2.0.3
- Magento 2.0.4
- Magento 2.0.5
- Magento 2.0.6
- Magento 2.0.7
- Magento 2.0.8
- Magento 2.0.9
- Magento 2.0.10
- Magento 2.0.11
- Magento 2.0.12
- Magento 2.0.13
- Magento 2.0.14
- Magento 2.0.15
- Magento 2.0.16
- Magento 2.0.17
- Magento 2.0.18
- Magento 2.1.0
- Magento 2.1.0-rc1
- Magento 2.1.0-rc2
- Magento 2.1.0-rc3
- Magento 2.1.1
- Magento 2.1.2
- Magento 2.1.3
- Magento 2.1.4
- Magento 2.1.5
- Magento 2.1.6
- Magento 2.1.7
- Magento 2.1.8
- Magento 2.1.9
- Magento 2.1.10
- Magento 2.1.11
- Magento 2.1.12
- Magento 2.1.13
- Magento 2.1.14
- Magento 2.1.15
- Magento 2.1.16
- Magento 2.1.17
- Magento 2.1.18
- Magento 2.2.0
- Magento 2.2.0-rc2.0
- Magento 2.2.0-rc2.1
- Magento 2.2.0-rc2.2
- Magento 2.2.0-rc2.3
- Magento 2.2.0-rc3.0
- Magento 2.2.0-RC1.1
- Magento 2.2.0-RC1.2
- Magento 2.2.0-RC1.3
- Magento 2.2.0-RC1.4
- Magento 2.2.0-RC1.5
- Magento 2.2.0-RC1.6
- Magento 2.2.1
- Magento 2.2.2
- Magento 2.2.3
- Magento 2.2.4
- Magento 2.2.5