CVE-2019-8338 Information

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 Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html http://seclists.org/fulldisclosure/2019/Apr/38 https://github.com/Airmail/AirmailPlugIn-Framework/commits/master https://github.com/RUB-NDS/Johnny-You-Are-Fired https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf https://www.openwall.com/lists/oss-security/2019/04/30/4

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9