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open redirect in pollbot

Moderate severity GitHub Reviewed Published Feb 16, 2022 in mozilla/PollBot • Updated May 22, 2023

Package

pip pollbot (pip)

Affected versions

< 1.4.6

Patched versions

1.4.6

Description

(From https://bugzilla.mozilla.org/show_bug.cgi?id=1753838)

Summary:
There was an open redirection vulnerability in the path of:

https://pollbot.services.mozilla.com/ and https://pollbot.stage.mozaws.net/

Description:
An attacker can redirect anyone to malicious sites.

Steps To Reproduce:
Type in this URL:

https://pollbot.services.mozilla.com/%0a/evil.com/

It redirects to that website

evil.com

evil.com was used as an example but this could be any website. Note, the /%0a/ and trailing / are required.

Supporting Material/References:
https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html

Impact

Attackers can serve malicious websites that steal passwords or download ransomware to their victims machine due to a redirect and there are a heap of other attack vectors.

References

@gbrownmozilla gbrownmozilla published to mozilla/PollBot Feb 16, 2022
Published to the GitHub Advisory Database Feb 16, 2022
Reviewed Feb 16, 2022
Published by the National Vulnerability Database Feb 16, 2023
Last updated May 22, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.072%
(32nd percentile)

Weaknesses

CVE ID

CVE-2022-0637

GHSA ID

GHSA-vg27-hr3v-3cqv

Source code

Credits

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