Vulnerability Description
A vulnerability in the Remote Package Manager (RPM) subsystem of Cisco NX-OS Software could allow an authenticated, local attacker with administrator credentials to leverage a time-of-check, time-of-use (TOCTOU) race condition to corrupt local variables, which could lead to arbitrary command injection. The vulnerability is due to the lack of a proper locking mechanism on critical variables that need to stay static until used. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a set of RPM-related CLI commands. A successful exploit could allow the attacker to perform arbitrary command injection. The attacker would need administrator credentials for the targeted device.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | >= 7.0\(3\)i4, < 7.0\(3\)i7\(4\) |
| Cisco | Nexus 3000 | - |
| Cisco | Nexus 3100 | - |
| Cisco | Nexus 3100-Z | - |
| Cisco | Nexus 3100V | - |
| Cisco | Nexus 3200 | - |
| Cisco | Nexus 3400 | - |
| Cisco | Nexus 3500 | - |
| Cisco | Nexus 3524-X | - |
| Cisco | Nexus 3524-Xl | - |
| Cisco | Nexus 3548-X | - |
| Cisco | Nexus 3548-Xl | - |
| Cisco | Nexus 9000 | - |
| Cisco | Nexus 9200 | - |
| Cisco | Nexus 9300 | - |
| Cisco | Nexus 9500 | - |
| Cisco | Nx Os | >= 7.0\(3\), < 7.0\(3\)f3\(5\) |
| Cisco | Nexus 3600 | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/108361Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securityfocus.com/bid/108361Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2019-1732?
CVE-2019-1732 is a vulnerability with a CVSS score of 6.4 (MEDIUM). A vulnerability in the Remote Package Manager (RPM) subsystem of Cisco NX-OS Software could allow an authenticated, local attacker with administrator credentials to leverage a time-of-check, time-of-u...
How severe is CVE-2019-1732?
CVE-2019-1732 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-1732?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Nx-Os, Cisco Nexus 3000, Cisco Nexus 3100, Cisco Nexus 3100-Z, Cisco Nexus 3100V.