PT-2021-3788 · Cisco · Cisco Packet Tracer

Hou Jingyi · Published 2021-08-04 · Updated 2021-08-11 · CVE-2021-1593

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Packet Tracer for Windows (affected versions not specified)

Description A vulnerability in Cisco Packet Tracer for Windows could allow an authenticated, local attacker to perform a DLL injection attack on an affected device. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. This vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path on the system, which can cause a malicious DLL file to be loaded when the application starts. A successful exploit could allow an attacker with normal user privileges to execute arbitrary code on the affected system with the privileges of another user’s account.

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

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

BDU:2021-04063

CVE-2021-1593

Affected Products

Cisco Packet Tracer

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-packettracer-dll-inj-Qv8Mk5Jx · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1593 · Security Note
• https://bdu.fstec.ru/vul/2021-04063 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1593 · Vendor Advisory
• https://t.me/cibsecurity/26846 · Telegram Post