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CVE-2021-20270

Status Candidate

Overview

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.

Related Files

Red Hat Security Advisory 2021-4139-03
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4139-03 - The resource-agents packages provide the Pacemaker and RGManager service managers with a set of scripts. These scripts interface with several services to allow operating in a high-availability environment. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2021-20270, CVE-2021-27291
MD5 | 7a4d21faefe736f098c96b0d584a641f
Red Hat Security Advisory 2021-4151-06
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4151-06 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include code execution, cross site scripting, denial of service, and traversal vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution, xss, python
systems | linux, redhat
advisories | CVE-2020-27619, CVE-2020-28493, CVE-2021-20095, CVE-2021-20270, CVE-2021-23336, CVE-2021-27291, CVE-2021-28957, CVE-2021-42771
MD5 | bbdcbb8a6e7f541b1f1df6973fbaec39
Red Hat Security Advisory 2021-4150-02
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4150-02 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, python
systems | linux, redhat
advisories | CVE-2021-20270, CVE-2021-27291
MD5 | 562ed56016a3f1ca14eb5f2d770894f6
Red Hat Security Advisory 2021-3252-01
Posted Aug 27, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3252-01 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include buffer overflow, code execution, denial of service, and traversal vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability, code execution, python
systems | linux, redhat
advisories | CVE-2020-27619, CVE-2020-28493, CVE-2021-20095, CVE-2021-20270, CVE-2021-23336, CVE-2021-27291, CVE-2021-3177
MD5 | 64d7bbcc756663f32879557072f66329
Ubuntu Security Notice USN-4885-1
Posted Mar 22, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4885-1 - It was discovered that Pygments incorrectly handled parsing SML files. If a user or automated system were tricked into parsing a specially crafted SML file, a remote attacker could cause Pygments to hang, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2021-20270
MD5 | a3a85071b4f559e38a297f2f2c2cd26b
Red Hat Security Advisory 2021-0781-01
Posted Mar 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0781-01 - Red Hat Ansible Automation Platform integrates Red Hat's automation suite consisting of Red Hat Ansible Tower, Red Hat Ansible Engine, Automation Hub and use-case specific capabilities for Microsoft Windows, network, security, and more, along with Software-as-a-Service -based capabilities and features for organization-wide effectiveness. This update fixes various bugs and adds enhancements. Documentation for these changes is available from the Release Notes document linked to in the References section. Issues addressed include code execution, denial of service, and traversal vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution
systems | linux, redhat, windows
advisories | CVE-2020-15366, CVE-2020-7789, CVE-2021-20270, CVE-2021-3281
MD5 | 7ba66622f6268d926f6a082440c05ad4
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