RCE in PHP
CVE-2018-19520
An issue was discovered in SDCMS 1.6 with PHP 5.x. app/admin/controller/themecontroller.php uses a check_bad function in an attempt to block certain PHP functions such as eval, but does not prevent use of preg_replace 'e' calls, allowing users to execute arbitrary code by leveraging access to admin template management.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- blog.whiterabbitxyj.com/cve/SDCMS_1.6_code_execution.doc (Exploit, Third Party Advisory)
- github.com/WhiteRabbitc/WhiteRabbitc.github.io/blob/master/cve/SDCMS_1.6_code_e… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-19520?
- CVE-2018-19520 is a high-severity vulnerability in PHP, classified under Code Injection. CVSS score: 8.8/10. Published 2018-11-25.
- How severe is CVE-2018-19520?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2018-19520 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.