CVE-2019-10735

Severity Score

4.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Claws Mail 3.14.1, an attacker in possession of S/MIME or 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, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.

En Claws Mail 3.14.1 un atacante que posea correos electrónicos cifrados en S/MIME o PGP puede envolverlos como subpartes de un correo electrónico multiparte manipulado. La(s) parte(s) cifrada(s) se puede(n) ocultar aún más utilizando caracteres de nuevas líneas ASCII o HTML/CSS. Este correo electrónico multiparte manipulado puede ser reenviado por el atacante al destinatario previsto. Si el destinatario responde a este correo (de aspecto benigno), estaría filtrando el texto plano de algunas partes del mensaje cifrado sin querer, devolviéndoselas al atacante.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

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

2019-04-03 CVE Reserved
2019-04-07 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-319: Cleartext Transmission of Sensitive Information

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4159	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Claws-mail Search vendor "Claws-mail"		Mail Search vendor "Claws-mail" for product "Mail"				3.14.1 Search vendor "Claws-mail" for product "Mail" and version "3.14.1"		-		Affected