CVE-2019-15961

Clam AntiVirus (ClamAV) Software Email Parsing Vulnerability

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the email parsing module Clam AntiVirus (ClamAV) Software versions 0.102.0, 0.101.4 and prior could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to inefficient MIME parsing routines that result in extremely long scan times of specially formatted email files. An attacker could exploit this vulnerability by sending a crafted email file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to scan the crafted email file indefinitely, resulting in a denial of service condition.

Una vulnerabilidad en el módulo de análisis de correo electrónico de Clam AntiVirus (ClamAV) Software versiones 0.102.0, 0.101.4 y anteriores, podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio en un dispositivo afectado. La vulnerabilidad es debido a rutinas de análisis MIME ineficientes que resultan en tiempos de análisis extremadamente largos de archivos de correo electrónico con formato especial. Un atacante podría explotar esta vulnerabilidad enviando un archivo de correo electrónico diseñado hacia un dispositivo afectado. Una explotación podría permitir al atacante causar que el proceso de escaneo de ClamAV escanee el archivo de correo electrónico diseñado indefinidamente, resultando en una condición de denegación de servicio.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-09-06 CVE Reserved
2019-11-21 CVE Published
2023-07-07 EPSS Updated
2024-11-15 CVE Updated
2024-11-15 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (5)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/02/msg00016.html	Mailing List

URL	Date	SRC
https://bugzilla.clamav.net/show_bug.cgi?id=12380	2024-11-15

URL	Date	SRC

URL	Date	SRC
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvr56010	2022-10-19
https://security.gentoo.org/glsa/202003-46	2022-10-19
https://usn.ubuntu.com/4230-2	2022-10-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Clamav Search vendor "Clamav"		Clamav Search vendor "Clamav" for product "Clamav"				<= 0.101.4 Search vendor "Clamav" for product "Clamav" and version " <= 0.101.4"		-		Affected
Clamav Search vendor "Clamav"		Clamav Search vendor "Clamav" for product "Clamav"				0.102.0 Search vendor "Clamav" for product "Clamav" and version "0.102.0"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Firmware Search vendor "Cisco" for product "Email Security Appliance Firmware"				11.1.1-042 Search vendor "Cisco" for product "Email Security Appliance Firmware" and version "11.1.1-042"		-		Affected
Cisco Search vendor "Cisco"		Email Security Appliance Firmware Search vendor "Cisco" for product "Email Security Appliance Firmware"				11.1.2-023 Search vendor "Cisco" for product "Email Security Appliance Firmware" and version "11.1.2-023"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected