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CVE-2019-8338 Details

Description

The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html	CVE	Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/Apr/38	CVE	Mailing ListThird Party Advisory
https://github.com/Airmail/AirmailPlugIn-Framework/commits/master	CVE	PatchThird Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired	CVE	Third Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf	CVE	Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/04/30/4	CVE	Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html	[email protected]	Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/Apr/38	[email protected]	Mailing ListThird Party Advisory
https://github.com/Airmail/AirmailPlugIn-Framework/commits/master	[email protected]	PatchThird Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired	[email protected]	Third Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf	[email protected]	Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/04/30/4	[email protected]	Mailing ListThird Party Advisory

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-347	Improper Verification of Cryptographic Signature	[email protected]

Affected Products

Product	Versions
gpg-pgp project gpg-pgp	<= 1.0\(9\)
CPE cpe:2.3:a:gpg-pgp_project:gpg-pgp::::::airmail::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
May 21, 2019	Initial Analysis	[email protected]