CVE-2019-14664 Information

Description

In Enigmail below 2.1 an attacker in possession of PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email he unknowingly leaks the plaintext of the encrypted message part(s) back to the attacker. This attack variant bypasses protection mechanisms implemented after the \EFAIL\ attacks.

CVSS Vector

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

Reference

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AVNTEF3WSOOQYKMIPEH7F77UPXES5BU5/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CYWBJHSBBLAHKMRWDWH2XXQDYAGDHB5I/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GHC5WDQ47FQSL5CTGQUYIHVC3RNZ7UH5/ https://sourceforge.net/p/enigmail/bugs/984/ https://www.enigmail.net/index.php/en/download/changelog

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

6.5