9.8crit
CVE-2017-20206
Appointments <= 2.2.1 - Unauthenticated PHP Object Injection
Published 12 mo ago · modified 4 mo ago · JSON
CVSS
9.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
0.7%
percentile 55%
Public exploits
0
none known
Summary
The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the `wpmudev_appointments` cookie. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 12 mo ago
Exploit prediction (EPSS)
0.73% probability of exploitation in the next 30 days, higher than 55% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- wpmudev Appointments
Classification
- Weakness
- CWE-502 Deserialization of Untrusted Data
References
- wordfence.com /threat-intel/vulnerabilities/id/7e8f230e-3f96-4efd-806d-72725b960303?source=cve
- wordfence.com /blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild/
- plugins.trac.wordpress.org /changeset/1733186/appointments
Sources
- CVE List: CVE-2017-20206
- NVD: CVE-2017-20206
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