RCE in Yaws
CVE-2020-24916
CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.
Vulnerability class: Command Injection (OS Command Injection)
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: 0.174 (97.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.174 · newest: 0.174 · change: 0.000
Affected products
- Yaws
- Canonical Ubuntu Linux — versions 18.04
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/erlyaws/yaws/commits/master (Patch, Third Party Advisory)
- packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection… (Exploit, VDB Entry, Third Party Advisory)
- vuln.be/post/yaws-xxe-and-shell-injections/ (Exploit, Third Party Advisory)
- github.com/vulnbe/poc-yaws-cgi-shell-injection (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/09/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4569-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2020/dsa-4773 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-24916?
- CVE-2020-24916 is a critical-severity vulnerability in Yaws, classified under OS Command Injection. CVSS score: 9.8/10. Published 2020-09-09.
- How severe is CVE-2020-24916?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-24916 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.