thunderbird: S/MIME and PGP decryption oracles can be built with HTML emails
Published Oct 18, 2018
6.5
MEDIUMCVSS 3.0
EPSS 2.47%
Description
Decrypted S/MIME parts, when included in HTML crafted for an attack, can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 52.9.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<52.9
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Thunderbird | n/a |
|
Configuration 1
- < 52.9.0
Configuration 2
- 6.0
- 7.0
- 7.5
- 7.6
- 6.0
- 7.0
- 6.0
- 7.0
- 6.0
- 7.0
Configuration 3
- 8.0
- 9.0
Configuration 4
- 14.04
- 16.04
- 17.10
- 18.04
No data.
Red Hat Enterprise Linux 6
thunderbird-0:52.9.1-1.el6
Fixed · RHSA-2018:2251
Red Hat Enterprise Linux 7
thunderbird-0:52.9.1-1.el7_5
Fixed · RHSA-2018:2252
Red Hat Enterprise Linux 8
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | thunderbird-0:52.9.1-1.el6 | Fixed | RHSA-2018:2251 |
| Red Hat Enterprise Linux 7 | thunderbird-0:52.9.1-1.el7_5 | Fixed | RHSA-2018:2252 |
| Red Hat Enterprise Linux 8 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 2.47% (0.02469) | 83.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.47% (0.02469) | 82.36th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.46% (0.00460) | 62.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00227) | 61.82th | v3 (v2023.03.01) |
| May 13, 2024 | 0.23% (0.00227) | 60.65th | v3 (v2023.03.01) |
| Apr 19, 2024 | 0.29% (0.00290) | 68.74th | v3 (v2023.03.01) |
| Mar 10, 2024 | 0.41% (0.00410) | 73.37th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.50% (0.00498) | 75.59th | v3 (v2023.03.01) |
| Oct 12, 2023 | 0.50% (0.00498) | 73.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.40% (0.00404) | 69.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.07% (0.02069) | 50.36th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
References (13)
- http://www.securityfocus.com/bid/104613 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:2251 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2252 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-12372 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1419417 x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1598538 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/07/msg00013.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-12372
- https://security.gentoo.org/glsa/201811-13 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3714-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-12372
- https://www.debian.org/security/2018/dsa-4244 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-18/ x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.