Critical severity · published Sep 9, 2020
CVE-2020-24916
CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection
9.8
CVSS
17.4%
EPSS
No
On KEV
Description
CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)17.4% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
UL
Ubuntu Linux · Canonical
18.04 · source: NVD
YA
Yaws · Yaws
1.81 through 2.0.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-24916
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-24916
Patch
https://github.com/erlyaws/yaws/commits/master
Exploit
https://github.com/vulnbe/poc-yaws-cgi-shell-injection
Mailing List
https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html
Exploit
https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html
Third Party Advisory
https://usn.ubuntu.com/4569-1/
Exploit
https://vuln.be/post/yaws-xxe-and-shell-injections/
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