CVE-2019-8338
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…
Does this matter?
Lower severity and a low EPSS score (1.73%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.73% probability · 77th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- gpg-pgp project/gpg-pgp
- Source
- cve@mitre.org
EPSS 1.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2019/Apr/38Mailing List, Third Party Advisory
- https://github.com/Airmail/AirmailPlugIn-Framework/commits/masterPatch, Third Party Advisory
- https://github.com/RUB-NDS/Johnny-You-Are-FiredThird Party Advisory
- https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdfThird Party Advisory
- https://www.openwall.com/lists/oss-security/2019/04/30/4Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2019/Apr/38Mailing List, Third Party Advisory
- https://github.com/Airmail/AirmailPlugIn-Framework/commits/masterPatch, Third Party Advisory
- https://github.com/RUB-NDS/Johnny-You-Are-FiredThird Party Advisory
- https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdfThird Party Advisory
- https://www.openwall.com/lists/oss-security/2019/04/30/4Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.