CVE-2020-5256
09.03.2020, 16:15
BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability.
| Vendor | Product | Version |
|---|---|---|
| bookstackapp | bookstack | 𝑥 < 0.25.3 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").
- CWE-434 - Unrestricted Upload of File with Dangerous TypeThe software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.
References