CVE-2020-5256
Published Mar 9, 2020
Last updated 5 years ago
Overview
- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 9
- Impact score
- 10
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:C/I:C/A:C
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B8B4AD81-4EED-4873-A781-F389F361A132",
"versionEndExcluding": "0.25.3"
}
],
"operator": "OR"
}
]
}
]