CVE-2020-28493
Regular Expression Denial of Service (ReDoS)
Description
This 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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:LAvailabilityLow
Weaknesses
Affected Products
palletsprojects
oss-project·US
jinjaLibrary
OSS Libraries / pypifedoraproject
oss-project·USaka fedora project
PyPI
package-ecosystem
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Fedora Project
oss-project·USaka fedora
IBM Corp.
commercial·USaka ibm, ibm corporation
and 3 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
https://snyk.io/vuln/SNYK-PYTHON-JINJA2-1012994
snyk.io
https://github.com/pallets/jinja/blob/ab81fd9c277900c85da0c322a2ff9d68a235b2e6/src/jinja2/utils.py%23L20
github.com
https://github.com/pallets/jinja/pull/1343
github.com
and 17 more references View all →
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