Vulnerability identifier: #VU31897
Vulnerability risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID:
CWE-ID:
CWE-74
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
kramdown
Web applications /
Modules and components for CMS
Vendor: Thomas Leitner
Description
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to improper validation of input. A remote attacker can gain read access (such as template="/etc/passwd") or embedded Ruby code execution (such as a string that begins with template="string://<%= `).
Mitigation
Install update from vendor's website.
Vulnerable software versions
kramdown: 0.1.0 - 2.2.1
External links
https://github.com/gettalong/kramdown
https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0
https://kramdown.gettalong.org
https://kramdown.gettalong.org/news.html
https://rubygems.org/gems/kramdown
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.