CVE-2021-27291
Quick assessment
Affected
n/a n/a
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Matthäus G. Chajdas pygments是 （Matthäus G. Chajdas）开源的一个应用软件。提供通用语法突出显示工具功能。 pygments 1.1+ 存在安全漏洞，攻击者可利用该漏洞可以导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-27291
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Matthäus G. Chajdas pygments 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Matthäus G. Chajdas pygments是 （Matthäus G. Chajdas）开源的一个应用软件。提供通用语法突出显示工具功能。 pygments 1.1+ 存在安全漏洞，攻击者可利用该漏洞可以导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2021-27291
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-27291 (1)
Vendor Advisories for CVE-2021-27291 (2)
Mailing List Discussions for CVE-2021-27291 (4)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/ vendor-advisory x_refsource_FEDORA
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Other References for CVE-2021-27291 (1)
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https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce x_refsource_MISC
Same Patch Batch · n/a · 2021-03-17 · 13 CVEs total
| CVE-2021-28660 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-28650 | Gnome gnome-autoar 后置链接漏洞 | |
| CVE-2017-20002 | shadow 安全漏洞 | |
| CVE-2020-28873 | Fluxbb 安全漏洞 | |
| CVE-2021-27292 | ua-parser-js 安全漏洞 | |
| CVE-2020-35456 | Google Play Diibear 安全漏洞 | |
| CVE-2020-35455 | Google Play Diibear 安全漏洞 | |
| CVE-2020-35454 | Google Play Diibear 安全漏洞 | |
| CVE-2020-17457 | FUJITSU LIMITED Fujitsu ServerView Suite 跨站脚本漏洞 | |
| CVE-2019-18233 | Advantech Spectre RT ERT351 firmware 跨站脚本漏洞 | |
| CVE-2019-18231 | Advantech Spectre RT ERT351 firmware 安全漏洞 | |
| CVE-2019-18235 | None Advantech Spectre RT ERT351 firmware 安全漏洞 |
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Same vendor: n/a
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V. Comments for CVE-2021-27291
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