CVE-2019-11739

Mozilla: Covert Content Attack on S/MIME encryption using a crafted multipart/alternative message

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 68.1 and Thunderbird < 60.9.

Las partes S/ MIME cifradas en un mensaje multiparte y alternativo diseñado pueden perder texto plano cuando son incluidos en una respuesta y reenvío HTML. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.1 y Thunderbird versiones anteriores a 60.9.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-05-03 CVE Reserved
2019-09-16 CVE Published
2024-08-04 CVE Updated
2024-09-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-319: Cleartext Transmission of Sensitive Information
CWE-356: Product UI does not Warn User of Unsafe Actions

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html	2020-08-24
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html	2020-08-24
https://usn.ubuntu.com/4150-1	2020-08-24
https://www.mozilla.org/security/advisories/mfsa2019-29	2020-08-24
https://www.mozilla.org/security/advisories/mfsa2019-30	2020-08-24
https://access.redhat.com/security/cve/CVE-2019-11739	2019-09-19
https://bugzilla.redhat.com/show_bug.cgi?id=1752307	2019-09-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.9.0 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.9.0"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				>= 68.0 < 68.1.0 Search vendor "Mozilla" for product "Thunderbird" and version " >= 68.0 < 68.1.0"		-		Affected