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"cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-pygments-0:1.5-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-08-24T00:00:00Z"}], "bugzilla": {"description": "python-pygments: ReDoS in multiple lexers", "id": "1940603", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1940603"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["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.", "A denial of service attack was discovered against pygments.  Some of the regular expressions used to tokenise source code for highlighting have exponential complexity.  A specially crafted input file could cause pygments to take effectively infinite time to parse, consuming CPU resources and denying access to the service."], "name": "CVE-2021-27291", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "python-pygments", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "python-pygments", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "resource-agents", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Out of support scope", "package_name": "python-pygments", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}], "public_date": "2021-01-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-27291\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-27291"], "threat_severity": "Moderate"}