High severity · published Feb 11, 2019
CVE-2018-15588
MailMate before 1.11.3 mishandles a suspicious HTML/MIME structure in a signed/encrypted email
7.5
CVSS
2.4%
EPSS
No
On KEV
Description
MailMate before 1.11.3 mishandles a suspicious HTML/MIME structure in a signed/encrypted email.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mailmate · Freron
before 1.11.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-15588
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-15588
Third Party Advisory
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
Mailing List
http://seclists.org/fulldisclosure/2019/Apr/38
Mailing List
http://www.openwall.com/lists/oss-security/2019/04/30/4
github.com
https://github.com/RUB-NDS/Johnny-You-Are-Fired
github.com
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
Release Notes
https://updates.mailmate-app.com/release_notes
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MailMate before 1.11 automatically imported S/MIME certificates and thereby silently replaced existing ones
5.9
CVE-2017-17689
The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL
5.9
CVE-2017-17688
The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL
