RCE in Ejs
CVE-2022-29078
The ejs (aka Embedded JavaScript templates) package 3.1.6 for Node.js allows server-side template injection in settings[view options][outputFunctionName]. This is parsed as an internal option, and overwrites the outputFunctionName option with an arbitrary OS command (which is executed upon template compilation).
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.328 (98.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.328 · newest: 0.328 · change: 0.000
Affected products
- Ejs — versions 3.1.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/mde/ejs/releases (Third Party Advisory, Release Notes)
- eslam.io/posts/ejs-server-side-template-injection-rce/ (Exploit, Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220804-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-29078?
- CVE-2022-29078 is a critical-severity vulnerability in Ejs, classified under Code Injection. CVSS score: 9.8/10. Published 2022-04-25.
- How severe is CVE-2022-29078?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-29078 known to be exploited?
- 57 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.