Vulnerability Details : CVE-2017-12313
An untrusted search path (aka DLL Preload) vulnerability in the Cisco Network Academy Packet Tracer software could allow an authenticated, local attacker to execute arbitrary code via DLL hijacking if a local user with administrative privileges executes the installer in the current working directory where a crafted DLL has been placed by an attacker. The vulnerability is due to incomplete input validation of path and file names of a DLL file before it is loaded. An attacker could exploit this vulnerability by creating a malicious DLL file and installing it in a specific system directory. A successful exploit could allow the attacker to execute commands on the underlying Microsoft Windows host with privileges equivalent to the SYSTEM account. An attacker would need valid user credentials to exploit this vulnerability.
Vulnerability category: File inclusionInput validationExecute code
Products affected by CVE-2017-12313
- cpe:2.3:a:cisco:packet_tracer:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-12313
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-12313
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
6.7
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2017-12313
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
-
The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.Assigned by: nvd@nist.gov (Primary)
-
The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2017-12313
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-cpt
Cisco Network Academy Packet Tracer DLL Preload VulnerabilityVendor Advisory
-
http://www.securityfocus.com/bid/101858
Cisco Network Academy Packet Tracer DLL Loading Local Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
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