Home/CVE/dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forwa
CVE

CVE-2018-12373

dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forwa

dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forward. This vulnerability affects Thunderbird < 52.9.

MEDIUM · CVSS 6.5 EPSS 0.01043
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

7
mozilla thunderbird< 52.9.0
redhat enterprise linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux workstationall versions
debian linuxall versions
canonical ubuntu linuxall versions
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.0 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Oct 2018 · 01:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

5
suse-csafopenSUSE-SU-2024:10601-1
suse-csafSUSE-SU-2018:2174-1
usnUSN-3714-1
rhsaRHSA-2018:2251Important
rhsaRHSA-2018:2252Important
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/104613Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1464056Issue TrackingPermissions RequiredVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1464667Issue TrackingVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00013.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201811-13Third Party Advisory
https://usn.ubuntu.com/3714-1/Third Party Advisory
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