Medium severity · published Jan 13, 2022
CVE-2021-23824
This affects the package Crow before 0.3+4
6.1
CVSS
0.9%
EPSS
No
On KEV
Description
This affects the package Crow before 0.3+4. When using attributes without quotes in the template, an attacker can manipulate the input to introduce additional attributes, potentially executing code. This may lead to a Cross-site Scripting (XSS) vulnerability, assuming an attacker can influence the value entered into the template. If the template is used to render user-generated content, this vulnerability may escalate to a persistent XSS vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Crow · Crowcpp
before 0.3\+4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23824
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-23824
Issue Tracking
https://github.com/CrowCpp/Crow/pull/317
Release Notes
https://github.com/CrowCpp/Crow/releases/tag/v0.3%2B4
Exploit
https://snyk.io/vuln/SNYK-UNMANAGED-CROW-2336164
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