CVE-2020-14001
First published: Fri Jul 17 2020(Updated: )
The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template="/etc/passwd") or unintended embedded Ruby code execution (such as a string that begins with template="string://<%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/kramdown | <2.3.0 | 2.3.0 |
| debian/ruby-kramdown | <=1.17.0-4<=1.17.0-1 | 2.3.0-1 1.17.0-1+deb10u1 |
| Kramdown Project Kramdown | <2.3.0 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| Canonical Ubuntu Linux | =20.04 | |
| ubuntu/ruby-kramdown | <1.17.0-4ubuntu0.1 | 1.17.0-4ubuntu0.1 |
| ubuntu/ruby-kramdown | <1.17.0-4ubuntu0.20.10.1 | 1.17.0-4ubuntu0.20.10.1 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| ubuntu/ruby-kramdown | <2.3.0-4 | 2.3.0-4 |
| debian/ruby-kramdown | 2.3.0-5 2.4.0-2 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-14001
- 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
- https://security.netapp.com/advisory/ntap-20200731-0004/
- https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html
- https://www.debian.org/security/2020/dsa-4743
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L/
- https://usn.ubuntu.com/4562-1/
- https://github.com/advisories/GHSA-mqm2-cgpr-p4m6 (Advisory)
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml
- https://security-tracker.debian.org/tracker/CVE-2020-14001
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14001
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=965305
- https://github.com/gettalong/kramdown
- https://launchpad.net/bugs/cve/CVE-2020-14001
- https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2%40%3Cnotifications.fluo.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L/
- https://ubuntu.com/security/notices/USN-4562-1
- https://ubuntu.com/security/notices/USN-4562-2
- https://www.cve.org/CVERecord?id=CVE-2020-14001
- https://ubuntu.com/security/CVE-2020-14001
Frequently Asked Questions
What is CVE-2020-14001?
CVE-2020-14001 is a vulnerability in the kramdown gem before 2.3.0 for Ruby that allows unintended read access or unintended embedded Ruby code execution.
How severe is CVE-2020-14001?
CVE-2020-14001 has a severity rating of 9.8 (critical).
How can I fix CVE-2020-14001?
To fix CVE-2020-14001, update kramdown to version 2.3.0 or later.
What software is affected by CVE-2020-14001?
CVE-2020-14001 affects kramdown gem before 2.3.0 for Ruby.
Where can I find more information about CVE-2020-14001?
You can find more information about CVE-2020-14001 at the following references: [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-14001), [GitHub Commit](https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde), [GitHub Comparison](https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0).
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