6.1 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
36.7%
Package : flask-security
Version : 1.7.5-2+deb10u1
CVE ID : CVE-2021-23385
Debian Bug : 1021279
It was discovered that when using the get_post_logout_redirect and
get_post_login_redirect functions in flask-security, an implementation
of simple security for Flask apps, it is possible to bypass URL
validation and redirect a user to an arbitrary URL by providing multiple
back slashes such as \\evil.com/path.
This vulnerability is exploitable only if an alternative WSGI server
other than Werkzeug is used, or the default behaviour of Werkzeug is
modified using 'autocorrect_location_header=False.
For Debian 10 buster, this problem has been fixed in version
1.7.5-2+deb10u1.
We recommend that you upgrade your flask-security packages.
For the detailed security status of flask-security please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/flask-security
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
Attachment:
signature.asc
Description: PGP signature
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 11 | all | python3-flask-security | < 4.0.0-1+deb11u1 | python3-flask-security_4.0.0-1+deb11u1_all.deb |
Debian | 10 | all | python3-flask-security | < 1.7.5-2+deb10u1 | python3-flask-security_1.7.5-2+deb10u1_all.deb |
Debian | 10 | all | flask-security | < 1.7.5-2+deb10u1 | flask-security_1.7.5-2+deb10u1_all.deb |
Debian | 11 | all | flask-security | < 4.0.0-1+deb11u1 | flask-security_4.0.0-1+deb11u1_all.deb |
6.1 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
36.7%