Resource Exhaustion Affecting python27:2.7/python2-pip-wheel package, versions <0:9.0.3-18.module+el8.3.0+7707+eb4bba01


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.96% (84th percentile)

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  • Snyk IDSNYK-RHEL8-PYTHON27-4121194
  • published26 Jul 2021
  • disclosed11 Jan 2021

Introduced: 11 Jan 2021

CVE-2021-27291  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:8 python27:2.7/python2-pip-wheel to version 0:9.0.3-18.module+el8.3.0+7707+eb4bba01 or higher.
This issue was patched in RHSA-2021:4151.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python27:2.7/python2-pip-wheel package and not the python27:2.7/python2-pip-wheel package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.

CVSS Scores

version 3.1