VDB
CVE-2021-20270
CVE-2021-20270
PUBLISHED
CVSS 7.5 HIGH
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.
EPSS 2.76% · 86.1th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
2.76%
86.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | pygments | 0, 2.0.1+dfsg-1.1svn1, 2.0.1+dfsg-1.1ubuntu1 |
| Ubuntu:20.04:LTS | pygments | 2.3.1+dfsg-1ubuntu1, 0, * |
| Ubuntu:Pro:14.04:LTS | pygments | *, 1.6+dfsg-1ubuntu1, 1.6+dfsg-1ubuntu1.1 |
| Ubuntu:18.04:LTS | pygments | 2.2.0+dfsg-1, 0 |
Timeline
- Mar 9, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Dec 29, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 1, 2022 EPSS Score
- May 3, 2022 EPSS Score
- Jul 5, 2022 EPSS Score
- Sep 7, 2022 EPSS Score
- Nov 9, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-20270 advisory
- https://ubuntu.com/security/notices/USN-4885-1 advisory
- https://ubuntu.com/security/notices/USN-4897-2 advisory
- https://www.cve.org/CVERecord?id=CVE-2021-20270 third-party-advisory