medium
5.3
CWE
20
Advisory Published
CVE Published
Updated

CVE-2017-7791: Input Validation

First published: Tue Aug 08 2017(Updated: )

On pages containing an iframe, the "data:" protocol can be used to create a modal alert that will render over arbitrary domains following page navigation, spoofing of the origin of the modal alert from the iframe content. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
debian/firefox
118.0.2-1
debian/firefox-esr
91.12.0esr-1~deb10u1
115.3.1esr-1~deb10u1
102.15.0esr-1~deb11u1
115.3.1esr-1~deb11u1
102.15.1esr-1~deb12u1
115.3.0esr-1~deb12u1
115.3.0esr-1
Thunderbird<52.3
52.3
Debian=8.0
Debian=9.0
Red Hat Enterprise Linux=5.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux Desktop=5.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=5.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.5
Red Hat Enterprise Linux Workstation=5.0
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0
Thunderbird<52.3.0
Firefox<55.0
Firefox ESR<52.3.0
Firefox<55
55
Firefox ESR<52.3
52.3

Remedy

https://bugzilla.mozilla.org/show_bug.cgi?id=1365875

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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-2017-7791?

    The severity of CVE-2017-7791 is classified as high due to its potential to spoof modal alerts over arbitrary domains.

  • How do I fix CVE-2017-7791?

    To fix CVE-2017-7791, upgrade to Thunderbird version 52.3 or higher, Firefox version 55 or higher, or Firefox ESR version 52.3 or higher.

  • Which versions of software are affected by CVE-2017-7791?

    CVE-2017-7791 affects Thunderbird versions earlier than 52.3, Firefox versions earlier than 55, and Firefox ESR versions earlier than 52.3.

  • Can CVE-2017-7791 be exploited remotely?

    Yes, CVE-2017-7791 can be exploited remotely due to its ability to spoof alerts over different domains.

  • What types of applications are impacted by CVE-2017-7791?

    CVE-2017-7791 impacts Mozilla applications including Thunderbird, Firefox, and Firefox ESR.

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