HIGH
The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids
Published Jun 13, 2018
7.5
HIGHCVSS 3.0
EPSS 2.14%
Description
The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.14% 0.02135
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02135
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.14% (0.02135) | 81.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.14% (0.02143) | 79.61th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.51% (0.00507) | 64.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.81% (0.00806) | 82.42th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.81% (0.00806) | 81.86th | v3 (v2023.03.01) |
| Nov 4, 2023 | 0.81% (0.00806) | 79.84th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.86% (0.00856) | 80.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.97% (0.00967) | 80.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.08% (0.02080) | 50.39th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.08% (0.02080) | 0.00th | v1 |
Weaknesses (1)
References (7)
- http://openwall.com/lists/oss-security/2018/06/13/10 x_refsource_MISCMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html x_refsource_MISCThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2019/Apr/38 mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/04/30/4 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://github.com/RUB-NDS/Johnny-You-Are-Fired x_refsource_MISC
- https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf x_refsource_MISC
- https://www.enigmail.net/index.php/en/download/changelog x_refsource_MISCExploitVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2018/06/13/10 | x_refsource_MISCMailing ListThird Party Advisory | |
| http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html | x_refsource_MISCThird Party AdvisoryVDB Entry | |
| http://seclists.org/fulldisclosure/2019/Apr/38 | mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2019/04/30/4 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired | x_refsource_MISC | |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf | x_refsource_MISC | |
| https://www.enigmail.net/index.php/en/download/changelog | x_refsource_MISCExploitVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 13, 2018
Updated Aug 5, 2024
Reserved Jun 7, 2018
Link CVE-2018-12019
CISA Vulnrichment
Updated n/a