Vulnerability Name:

CVE-2019-14664 (CCN-165269)

Assigned:2019-04-30
Published:2019-04-30
Updated:2022-01-01
Summary: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 v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-319
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2019-14664

Source: XF
Type: UNKNOWN
enigmail-cve201914664-info-disc(165269)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2019-941d57ed72

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2019-45a744b873

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2019-951d5dcaf9

Source: CCN
Type: SourceForge Enigmail Project Web site
#984 Leak encrypted emails by replying to benign looking mails

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://sourceforge.net/p/enigmail/bugs/984/

Source: MISC
Type: Vendor Advisory
https://www.enigmail.net/index.php/en/download/changelog

Vulnerable Configuration:Configuration 1:
  • cpe:/a:enigmail:enigmail:*:*:*:*:*:*:*:* (Version < 2.1)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:30:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:31:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2019146640000000
    V
    		CVE-2019-14664 on Ubuntu 19.04 (disco) - medium.
    2019-08-05
    oval:com.ubuntu.bionic:def:2019146640000000
    V
    		CVE-2019-14664 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-08-05
    oval:com.ubuntu.xenial:def:2019146640000000
    V
    		CVE-2019-14664 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-08-05
    BACK
    enigmail enigmail *
    fedoraproject fedora 30
    fedoraproject fedora 31
    fedoraproject fedora 32