CVE-2020-28493

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Summary

CVECVE-2020-28493
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-01 20:15:00 UTC
Updated2023-11-07 03:21:00 UTC
DescriptionThis affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.

Risk And Classification

Problem Types: CWE-400

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 33 All All All
Application Palletsprojects Jinja All All All All
Application Palletsprojects Jinja All All All All

References

ReferenceSourceLinkTags
backport urlize speedup by davidism · Pull Request #1343 · pallets/jinja · GitHub MISC github.com Patch, Third Party Advisory
github.com/pallets/jinja/blob/ab81fd9c277900c85da0c322a2ff9d68a235b2e6/s... MISC github.com Broken Link
[SECURITY] Fedora 33 Update: mingw-python-jinja2-2.11.3-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Jinja: Denial of service (GLSA 202107-19) — Gentoo security GENTOO security.gentoo.org
Regular Expression Denial of Service (ReDoS) in jinja2 | Snyk MISC snyk.io Exploit, Third Party Advisory
[SECURITY] Fedora 33 Update: mingw-python-jinja2-2.11.3-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
jinja/utils.py at ab81fd9c277900c85da0c322a2ff9d68a235b2e6 · pallets/jinja · GitHub MITRE github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Yeting Li

Legacy QID Mappings

  • 159463 Oracle Enterprise Linux Security Update for python27:2.7 (ELSA-2021-4151)
  • 159467 Oracle Enterprise Linux Security Update for python38:3.8 and python38-devel:3.8 (ELSA-2021-4162)
  • 200071 Ubuntu Security Notification for Jinja2 Vulnerabilities (USN-6599-1)
  • 239580 Red Hat Update for rh-python38 (RHSA-2021:3254)
  • 239582 Red Hat Update for python27 (RHSA-2021:3252)
  • 239826 Red Hat Update for python27:2.7 (RHSA-2021:4151)
  • 239839 Red Hat Update for python-jinja2 (RHSA-2021:4161)
  • 239845 Red Hat Update for python38:3.8 and python38-devel:3.8 (RHSA-2021:4162)
  • 281537 Fedora Security Update for mingw (FEDORA-2021-2ab8ebcabc)
  • 296067 Oracle Solaris 11.4 Support Repository Update (SRU) 33.94.0 Missing (CPUAPR2021)
  • 501765 Alpine Linux Security Update for py3-jinja2
  • 504328 Alpine Linux Security Update for py3-jinja2
  • 670724 EulerOS Security Update for python-jinja2 (EulerOS-SA-2021-2482)
  • 670758 EulerOS Security Update for python-jinja2 (EulerOS-SA-2021-2516)
  • 670780 EulerOS Security Update for python-jinja2 (EulerOS-SA-2021-2538)
  • 670804 EulerOS Security Update for python-jinja2 (EulerOS-SA-2021-2562)
  • 670913 EulerOS Security Update for python-jinja2 (EulerOS-SA-2021-2538)
  • 671011 EulerOS Security Update for python-jinja2 (EulerOS-SA-2021-2609)
  • 710057 Gentoo Linux Jinja Denial of service (GLSA 202107-19)
  • 902147 Common Base Linux Mariner (CBL-Mariner) Security Update for python-jinja2 (9857)
  • 902677 Common Base Linux Mariner (CBL-Mariner) Security Update for python-jinja2 (9857-1)
  • 940290 AlmaLinux Security Update for python-jinja2 (ALSA-2021:4161)
  • 940522 AlmaLinux Security Update for python27:2.7 (ALSA-2021:4151)
  • 940526 AlmaLinux Security Update for python38:3.8 and python38-devel:3.8 (ALSA-2021:4162)
  • 960320 Rocky Linux Security Update for python27:2.7 (RLSA-2021:4151)
  • 960342 Rocky Linux Security Update for python38:3.8 and python38-devel:3.8 (RLSA-2021:4162)
  • 960431 Rocky Linux Security Update for python-jinja2 (RLSA-2021:4161)
  • 982900 Python (pip) Security Update for jinja2 (GHSA-g3rq-g295-4j3m)
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