medium
6.5
CWE
200
Advisory Published
CVE Published
Updated

CVE-2018-12373: Infoleak

First published: Tue Jul 03 2018(Updated: )

A flaw was found in Mozilla Thunderbird before version 52.9. Decrypted S/MIME parts hidden with CSS or &lt;plaintext&gt; can leak plaintext when included in a HTML reply/forward. References: <a href="https://www.mozilla.org/en-US/security/advisories/mfsa2018-18/#CVE-2018-12373">https://www.mozilla.org/en-US/security/advisories/mfsa2018-18/#CVE-2018-12373</a> <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1464667">https://bugzilla.mozilla.org/show_bug.cgi?id=1464667</a>

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
redhat/thunderbird<52.9
52.9
Thunderbird<52.9.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux=7.5
Red Hat Enterprise Linux=7.6
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0
Debian=8.0
Debian=9.0
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=17.10
Ubuntu=18.04
Thunderbird<52.9
52.9
debian/thunderbird
1:115.12.0-1~deb11u1
1:128.7.0esr-1~deb11u1
1:128.5.0esr-1~deb12u1
1:128.7.0esr-1~deb12u1
1:128.7.0esr-1

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Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2018-12373?

    CVE-2018-12373 has been classified as a moderate severity vulnerability.

  • How do I fix CVE-2018-12373?

    To fix CVE-2018-12373, update Mozilla Thunderbird to version 52.9 or later.

  • What types of data are affected by CVE-2018-12373?

    CVE-2018-12373 can leak plaintext data from decrypted S/MIME parts that are hidden with CSS or <plaintext>.

  • Which versions of Thunderbird are vulnerable to CVE-2018-12373?

    Mozilla Thunderbird versions prior to 52.9 are vulnerable to CVE-2018-12373.

  • Is CVE-2018-12373 specific to a particular operating system?

    CVE-2018-12373 affects the Thunderbird application regardless of the operating system it is installed on.

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