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CVE-2020-14001

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Date: July 17, 2020

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.

Language: Ruby

Severity Score

Related Resources (23)

https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html
https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2%40%3Cnotifications.fluo.apache.org%3E
https://security.netapp.com/advisory/ntap-20200731-0004/
https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
https://rubygems.org/gems/kramdown
https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml
https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E
https://www.debian.org/security/2020/dsa-4743
https://nvd.nist.gov/vuln/detail/CVE-2020-14001
https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0
https://usn.ubuntu.com/4562-1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L/
https://security-tracker.debian.org/tracker/CVE-2020-14001
https://usn.ubuntu.com/4562-1/
https://kramdown.gettalong.org
https://github.com/gettalong/kramdown
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ/
https://kramdown.gettalong.org/news.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L
https://security.netapp.com/advisory/ntap-20200731-0004
https://www.mend.io/vulnerability-database/CVE-2020-14001

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

Missing Authorization

CWE-862

Top Fix

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Upgrade to version kramdown - 2.3.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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