Resource management error in pygments - CVE-2021-27291

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Main Vulnerability Database Vulnerabilities #VU51776

Resource management error in pygments - CVE-2021-27291

Published: March 30, 2021


Vulnerability identifier: #VU51776
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-27291
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (ReDoS) attack.

The vulnerability exists due to improper management of internal resources within the application. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDoS) attack.


Affected software

pygments
PowerStore T
Ansible Automation Platform
Cloud Pak for Security (CP4S)
MediaWiki
mediawiki (Debian package)
pygments (Debian package)
SUSE Linux Enterprise Module for Packagehub Subpackages
python3-pygments (Ubuntu package)
python-pygments (Ubuntu package)
python-galaxy-importer (Red Hat package)
python-pulp-ansible (Red Hat package)
python-bleach-allowlist (Red Hat package)
python3-Pygments
python2-Pygments
python3-pygments
python-pygments
python-Pygments
python-pygments-help
python2-pygments
python-bleach (Red Hat package)
resource-agents (Red Hat package)
automation-hub (Red Hat package)
python-galaxy-ng (Red Hat package)
SUSE CaaS Platform
SUSE Enterprise Storage
Fedora
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
SUSE Linux Enterprise Module for Public Cloud
Ubuntu
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Server
SUSE Linux Enterprise Module for Basesystem
openEuler

How to mitigate CVE-2021-27291

Install updates from vendor's website.

pygments - update to 2.7.4
Cloud Pak for Security (CP4S) - update to 1.10.7.0
MediaWiki - addressed in versions 1.31.13, 1.35.2
mediawiki (Debian package) - update to 1:1.31.14-1~deb10u1
pygments (Debian package) - update to 2.3.1+dfsg-1+deb10u2
python3-pygments (Ubuntu package) - addressed in versions Ubuntu Pro, 2.1+dfsg-1ubuntu0.2, 2.2.0+dfsg-1ubuntu0.2, 2.3.1+dfsg-4ubuntu0.2, 2.3.1+dfsg-1ubuntu2.2
python-pygments (Ubuntu package) - addressed in versions Ubuntu Pro, 2.1+dfsg-1ubuntu0.2, 2.2.0+dfsg-1ubuntu0.2, 2.3.1+dfsg-1ubuntu2.2
python-galaxy-importer (Red Hat package) - addressed in versions 0.2.15-1.el7pc, 0.2.15-1.el8pc
python-pulp-ansible (Red Hat package) - addressed in versions 0.5.6-1.el7pc, 0.5.6-1.el8pc
python-bleach-allowlist (Red Hat package) - addressed in versions 1.0.3-1.el7pc, 1.0.3-1.el8pc
python3-Pygments - addressed in versions 2.2.0-4.9.1, 2.4.2-10.7.1, 2.6.1-4.3.1, 2.6.1-7.10.1
python2-Pygments - update to 2.2.0-4.9.1
python3-pygments - update to 2.4.2-1.el7
python-pygments - addressed in versions 2.4.2-9.fc32, 2.6.1-6.fc33
python-Pygments - update to 2.4.2-10.7.1
python-pygments-help - update to 2.5.2-3
python2-pygments - update to 2.5.2-3
python3-pygments - update to 2.5.2-3
python-pygments - update to 2.5.2-3
python-bleach (Red Hat package) - addressed in versions 3.3.0-1.el7pc, 3.3.0-1.el8pc
PowerStore T - update to 3.5.0.1-2083289
resource-agents (Red Hat package) - update to 4.1.1-98.el8
automation-hub (Red Hat package) - addressed in versions 4.2.2-1.el7pc, 4.2.2-1.el8pc
python-galaxy-ng (Red Hat package) - addressed in versions 4.2.2-1.el7pc, 4.2.2-1.el8pc

External References

Related Security Bulletins