PT-2020-1741 · Cisco · Cisco Email Security Appliance+3

Published 2020-02-19 · Updated 2020-10-01 · CVE-2019-1983

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) and Cisco Content Security Management Appliance (SMA) (affected versions not specified)

Description A vulnerability in the email message filtering feature could allow an unauthenticated, remote attacker to cause repeated crashes in some internal processes, resulting in a denial of service (DoS) condition. The issue is due to insufficient input validation of email attachments. An attacker could exploit this by sending an email message with a crafted attachment through an affected device. A successful exploit could allow the attacker to cause specific processes to crash repeatedly, resulting in the complete unavailability of both the Cisco Advanced Malware Protection (AMP) and message tracking features and in severe performance degradation while processing email.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-00981

CVE-2019-1983

Affected Products

Cisco Advanced Malware Protection

Cisco Asyncos

Cisco Content Security Management Appliance

Cisco Email Security Appliance

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2019-1983 · Security Note
• https://osv.dev/vulnerability/CVE-2019-1983 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00981 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-esa-sma-dos · Vendor Advisory
• https://t.me/cibsecurity/14821 · Telegram Post