Medium severity5.9NVD Advisory· Published May 16, 2019· Updated Jun 17, 2026
CVE-2019-8338
CVE-2019-8338
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.
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Affected products
3- Airmail/Airmail GPG-PGP Plugindescription
- Range: <=1.0 (9)
Patches
Vulnerability mechanics
References
5- github.com/Airmail/AirmailPlugIn-Framework/commits/masternvdPatchThird Party Advisory
- packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlnvdThird Party AdvisoryVDB Entry
- seclists.org/fulldisclosure/2019/Apr/38nvdMailing ListThird Party Advisory
- github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdfnvdThird Party Advisory
- www.openwall.com/lists/oss-security/2019/04/30/4nvdMailing ListThird Party Advisory
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