CVE-2017-3819
"Cisco StarOS SSH Remote Privilege Escalation"
Description
A privilege escalation vulnerability in the Secure Shell (SSH) subsystem in the StarOS operating system for Cisco ASR 5000 Series, ASR 5500 Series, ASR 5700 Series devices, and Cisco Virtualized Packet Core could allow an authenticated, remote attacker to gain unrestricted, root shell access. The vulnerability is due to missing input validation of parameters passed during SSH or SFTP login. An attacker could exploit this vulnerability by providing crafted user input to the SSH or SFTP command-line interface (CLI) during SSH or SFTP login. An exploit could allow an authenticated attacker to gain root privileges access on the router. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability can be triggered via both IPv4 and IPv6 traffic. An established TCP connection toward port 22, the SSH default port, is needed to perform the attack. The attacker must have valid credentials to login to the system via SSH or SFTP. The following products have been confirmed to be vulnerable: Cisco ASR 5000/5500/5700 Series devices running StarOS after 17.7.0 and prior to 18.7.4, 19.5, and 20.2.3 with SSH configured are vulnerable. Cisco Virtualized Packet Core - Single Instance (VPC-SI) and Distributed Instance (VPC-DI) devices running StarOS prior to N4.2.7 (19.3.v7) and N4.7 (20.2.v0) with SSH configured are vulnerable. Cisco Bug IDs: CSCva65853.
INFO
Published Date :
March 15, 2017, 8:59 p.m.
Last Modified :
Oct. 3, 2019, 12:03 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2017-3819
vulnerability.
Even if cvefeed.io
is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-3819
.
URL | Resource |
---|---|
http://www.securityfocus.com/bid/96913 | Third Party Advisory VDB Entry |
http://www.securitytracker.com/id/1038050 | |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-asr | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-3819
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-3819
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CWE Cisco Systems, Inc. CWE-264 -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-264 CWE-306 -
CVE Modified by [email protected]
Jul. 12, 2017
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1038050 [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 30, 2017
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.securityfocus.com/bid/96913 No Types Assigned http://www.securityfocus.com/bid/96913 Third Party Advisory, VDB Entry Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-asr No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-asr Vendor Advisory Added CWE CWE-264 Added CPE Configuration OR *cpe:2.3:a:cisco:asr_5000_series_software:18.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.0.0.57828:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.0.0.59167:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.0.0.59211:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.0.l0.59219:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.1.0.59776:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.1.0.59780:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.1_base:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.3.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.3_base:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:18.4.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.0.m0.60737:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.0.m0.60828:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.0.m0.61045:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.1.0.61559:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:19.3.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:asr_5000_series_software:20.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:virtualized_packet_core:v18.0_base:*:*:*:*:*:*:* *cpe:2.3:a:cisco:virtualized_packet_core:v19.0_base:*:*:*:*:*:*:* *cpe:2.3:a:cisco:virtualized_packet_core:v20.0_base:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 17, 2017
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/96913 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-3819
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-3819
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.22 }} -0.01%
score
0.58419
percentile