PT-2019-2119 · Cisco · Cisco Asa+1

Published 2019-05-01 · Updated 2023-08-15 · CVE-2019-1687

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 Adaptive Security Appliance (ASA) Software (affected versions not specified) Cisco Firepower Threat Defense (FTD) Software (affected versions not specified)

Description A vulnerability in the TCP proxy functionality could allow an unauthenticated, remote attacker to cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The issue is due to an error in TCP-based packet inspection, which could cause the TCP packet to have an invalid Layer 2 (L2)-formatted header. An attacker could exploit this vulnerability by sending a crafted TCP packet sequence to the targeted device. A successful exploit could allow the attacker to cause a DoS condition.

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

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2019-01876

CVE-2019-1687

Affected Products

Cisco Asa

Cisco Ftd

References · 7

• https://osv.dev/vulnerability/CVE-2019-1687 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1687 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ftdtcp-dos · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-01876 · Security Note
• http://securityfocus.com/bid/108176 · Note
• https://t.me/cvenotify/56509 · Telegram Post
• https://quickview.cloudapps.cisco.com/quickview/bug/CSCvk44166 · Note