Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.0192
ruby-redcarpet security update
18 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: ruby-redcarpet
Publisher: Debian
Operating System: Debian GNU/Linux
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-26298
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2021/01/msg00014.html
https://www.debian.org/security/2021/dsa-4831
Comment: This bulletin contains two (2) Debian security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running ruby-redcarpet check for an updated version of the software
for their operating system.
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Debian LTS Advisory DLA-2526-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Utkarsh Gupta
January 15, 2021 https://wiki.debian.org/LTS
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Package : ruby-redcarpet
Version : 3.3.4-2+deb9u1
CVE ID : CVE-2020-26298
Debian Bug : 980057
In Redcarpet before version 3.5.1, there is an injection
vulnerability which can enable a cross-site scripting attack.
In affected versions, no HTML escaping was being performed when
processing quotes. This applies even when the `:escape_html`
option was being used.
For Debian 9 stretch, this problem has been fixed in version
3.3.4-2+deb9u1.
We recommend that you upgrade your ruby-redcarpet packages.
For the detailed security status of ruby-redcarpet please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/ruby-redcarpet
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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Debian Security Advisory DSA-4831-1 security@debian.org
https://www.debian.org/security/ Sebastien Delafond
January 15, 2021 https://www.debian.org/security/faq
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Package : ruby-redcarpet
CVE ID : CVE-2020-26298
Debian Bug : 980057
Johan Smits discovered that ruby-redcarpet, a markdown parser, did not
properly validate its input. This would allow an attacker to mount a
cross-site scripting attack.
For the stable distribution (buster), this problem has been fixed in
version 3.4.0-4+deb10u1.
We recommend that you upgrade your ruby-redcarpet packages.
For the detailed security status of ruby-redcarpet please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/ruby-redcarpet
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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