CVE-2019-1741

HIGH

Cisco IOS XE - Denial of Service via Malformed IP Packet Handling

Title source: llm
STIX 2.1

Description

A vulnerability in the Cisco Encrypted Traffic Analytics (ETA) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to a logic error that exists when handling a malformed incoming packet, leading to access to an internal data structure after it has been freed. An attacker could exploit this vulnerability by sending crafted, malformed IP packets to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition.

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/107614

Scores

CVSS v3 7.5
EPSS 0.0276
EPSS Percentile 84.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20 CWE-416
Status published
Products (14)
cisco/ios_xe 3.2.0ja
cisco/ios_xe 16.6.1
cisco/ios_xe 16.6.2
cisco/ios_xe 16.6.3
cisco/ios_xe 16.7.1
cisco/ios_xe 16.7.1a
cisco/ios_xe 16.7.1b
cisco/ios_xe 16.8.1
cisco/ios_xe 16.8.1a
cisco/ios_xe 16.8.1b
... and 4 more
Published Mar 28, 2019
Tracked Since Feb 18, 2026