Vulnerability Details : CVE-2019-1839
A vulnerability in Cisco Remote PHY Device Software could allow an authenticated, local attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying various CLI commands with crafted arguments. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.
Vulnerability category: Input validation
Products affected by CVE-2019-1839
- cpe:2.3:o:cisco:cbr-8_firmware:6.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:cbr-8_firmware:6.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:cbr-8_firmware:1.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:remote_phy_120_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:remote_phy_220_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:remote_phy_shelf_7200_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1839
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1839
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
|
Cisco Systems, Inc. | |
6.7
|
MEDIUM | CVSS:3.1/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-2019-1839
-
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: ykramarz@cisco.com (Secondary)
-
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-1839
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-rphy
Cisco Remote PHY Device Software Command Injection VulnerabilityVendor Advisory
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