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 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 v3.0 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3.0 : MEDIUM

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

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

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

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Configurations

Configuration 1 (hide)

cpe:2.3:a:gpg-pgp_project:gpg-pgp:*:*:*:*:*:airmail:*:*

Information

Published : 2019-05-16 10:29

Updated : 2019-05-21 07:07

NVD link : CVE-2019-8338

Mitre link : CVE-2019-8338

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

gpg-pgp_project

gpg-pgp

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