PT-2019-2658 · Cisco · Cisco Email Security Appliance+1

Published 2019-07-03 · Updated 2019-10-09 · CVE-2019-1921

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Cisco Email Security Appliance (ESA) (affected versions not specified)

Description A vulnerability in the attachment scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The issue is due to improper input validation of the email body, which could be exploited by naming a malicious attachment with a specific pattern. A successful exploit could allow the attacker to bypass configured content filters that would normally block the attachment.

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:2019-02544

CVE-2019-1921

Affected Products

Cisco Asyncos

Cisco Email Security Appliance

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-esa-bypass · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02544 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-1921 · Security Note
• https://osv.dev/vulnerability/CVE-2019-1921 · Vendor Advisory
• https://t.me/cvenotify/277 · Telegram Post
• https://tools.cisco.com/security/center/publicationListing.x · Note