CVE-2019-8338

Johnny You Are Fired

Severity Score

5.9

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La rutina de verificación de firmas en Airmail GPG-PGP Plugin, versiones 1.0 (9) y anteriores, no comprueba el estado de la firma en absoluto, lo cual permite a los atacantes remotos falsificar firmas de correo electrónico arbitrarias al crear un correo electrónico firmado con una firma no válida. Además, no comprueba la validez de la clave de firma, lo que permite a los atacantes remotos falsificar firmas de correo electrónico arbitrarias al crear una clave con un ID de usuario falso (email address) e inyectarla en el llavero de usuarios.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-02-15 CVE Reserved
2019-05-01 CVE Published
2024-06-13 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (6)

URL	Tag	Source
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html	Third Party Advisory
http://seclists.org/fulldisclosure/2019/Apr/38	Mailing List
https://github.com/RUB-NDS/Johnny-You-Are-Fired	Third Party Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf	Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/04/30/4	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/Airmail/AirmailPlugIn-Framework/commits/master	2019-05-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gpg-pgp Project Search vendor "Gpg-pgp Project"		Gpg-pgp Search vendor "Gpg-pgp Project" for product "Gpg-pgp"				<= 1.0\(9\) Search vendor "Gpg-pgp Project" for product "Gpg-pgp" and version " <= 1.0\(9\)"		airmail		Affected