medium
5.3
CWE
203
EPSS
0.052%
Advisory Published
CVE Published
Updated

CVE-2024-9398

First published: Tue Oct 01 2024(Updated: )

By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

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

Affected SoftwareAffected VersionHow to fix
debian/firefox
131.0.2-2
debian/thunderbird<=1:115.12.0-1~deb11u1<=1:115.15.0-1~deb11u1<=1:115.12.0-1~deb12u1<=1:115.15.0-1~deb12u1<=1:128.2.0esr-1
1:128.3.0esr-1
Thunderbird<131
131
Thunderbird<128.3
128.3
Firefox<131.0
Firefox ESR<128.3.0
Thunderbird<128.3
Thunderbird=129.0-beta
Thunderbird=129.0-beta2
Thunderbird=129.0-beta3
Thunderbird=129.0-beta4
Thunderbird=129.0-beta5
Thunderbird=129.0-beta6
Firefox<131
131
Firefox ESR<128.3
128.3

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2024-9398?

    CVE-2024-9398 is considered a moderate severity vulnerability due to its potential to expose installed applications through protocol handlers.

  • How do I fix CVE-2024-9398?

    To fix CVE-2024-9398, update Firefox to version 131 or later and Thunderbird to version 128.3 or later.

  • Which versions are affected by CVE-2024-9398?

    CVE-2024-9398 affects Firefox versions below 131, Firefox ESR versions below 128.3, and Thunderbird versions below 128.3.

  • Who is affected by CVE-2024-9398?

    Users of Firefox, Firefox ESR, and Thunderbird versions below the remedial versions are affected by CVE-2024-9398.

  • What type of vulnerability is CVE-2024-9398?

    CVE-2024-9398 is a URL handler vulnerability that can reveal information about the applications installed on a user's system.

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