What is the vulnerability ID?

The vulnerability ID is CVE-2021-43532.

What is the severity of CVE-2021-43532?

The severity of CVE-2021-43532 is medium with a severity value of 6.1.

Which software is affected by CVE-2021-43532?

The affected software is Mozilla Firefox version up to exclusive 94.0.

How can I fix CVE-2021-43532?

To fix CVE-2021-43532, update Mozilla Firefox to version 94 or above.

Where can I find more information about CVE-2021-43532?

You can find more information about CVE-2021-43532 on the following websites: - [Mozilla Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1719203) - [Mozilla Security Advisories](https://www.mozilla.org/en-US/security/advisories/mfsa2021-48/)

Vulnerability/
CVE-2021-43532

medium

6.1

CWE

601

2/11/2021

8/12/2021

21/11/2024

CVE-2021-43532

First published: Tue Nov 02 2021(Updated: )

The 'Copy Image Link' context menu action would copy the final image URL after redirects. By embedding an image that triggered authentication flows - in conjunction with a Content Security Policy that stopped a redirection chain in the middle - the final image URL could be one that contained an authentication token used to takeover a user account. If a website tricked a user into copy and pasting the image link back to the page, the page would be able to steal the authentication tokens. This was fixed by making the action return the original URL, before any redirects.

Credit: security@mozilla.org security@mozilla.org

Affected Software	Affected Version	How to fix
Mozilla Firefox	<94	94
Mozilla Firefox	<94.0
	<94.0

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

MFSA2021-48

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

What is the vulnerability ID?
The vulnerability ID is CVE-2021-43532.
What is the severity of CVE-2021-43532?
The severity of CVE-2021-43532 is medium with a severity value of 6.1.
Which software is affected by CVE-2021-43532?
The affected software is Mozilla Firefox version up to exclusive 94.0.
How can I fix CVE-2021-43532?
To fix CVE-2021-43532, update Mozilla Firefox to version 94 or above.
Where can I find more information about CVE-2021-43532?
You can find more information about CVE-2021-43532 on the following websites: - [Mozilla Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1719203) - [Mozilla Security Advisories](https://www.mozilla.org/en-US/security/advisories/mfsa2021-48/)

agent/type
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agent/softwarecombine
agent/author
agent/severity
agent/references
agent/weakness
collector/mozilla-advisory
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agent/description
source/Mozilla
agent/software-canonical-lookup
collector/nvd-index
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/tags
agent/event
collector/nvd-api
source/NVD
vendor/mozilla
canonical/mozilla firefox

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