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GHSA-h76r-vgf3-j6w5
No affected components available
Impact
An attacker can exploit this vulnerability to bypass authentication using a specially crafted persist cookie.
- To exploit this vulnerability, an attacker must obtain a Laravel’s secret key for cookie encryption and signing.
- Due to the logic of how this mechanism works, a targeted user account must be logged in while the attacker is exploiting the vulnerability.
- Authorization via persist cookie not shown in access logs.
Patches
- Issue has been patched in Build 472 and v1.1.5
- Shortened patch instructions
Workarounds
Apply https://github.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374 and https://github.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9 to your installation manually if you are unable to upgrade.
[Update 2022-01-20] Shortened patch instructions can be found here.
Recommendations
We recommend the following steps to make sure your server stays secure:
- Keep server OS and system software up to date.
- Keep October CMS software up to date.
- Use a multi-factor authentication plugin.
- Change the default backend URL or block public access to the backend area.
- Include the Roave/SecurityAdvisories Composer package to ensure that your application doesn't have installed dependencies with known security vulnerabilities.
References
Bugs found as part of Solar Security CMS Research. Credits to: • Andrey Basarygin • Andrey Guzei • Mikhail Khramenkov • Alexander Sidukov • Maxim Teplykh
For more information
If you have any questions or comments about this advisory:
- Email us at hello@octobercms.com
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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