Vulnerability Details : CVE-2017-12331
A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch. The vulnerability is due to insufficient NX-OS signature verification for software patches. An authenticated, local attacker could exploit this vulnerability to bypass signature verification and load a crafted, unsigned software patch on a targeted device. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16494, CSCvf23655.
Products affected by CVE-2017-12331
- cpe:2.3:o:cisco:nx-os:8.1\(1\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unified_computing_system:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-12331
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-2017-12331
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-2017-12331
-
The product does not verify, or incorrectly verifies, the cryptographic signature for data.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2017-12331
-
http://www.securitytracker.com/id/1039930
Cisco NX-OS Flaw Lets Local Users Bypass Software Patch Signature Verification - SecurityTrackerThird Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/102159
Cisco NX-OS System Software CVE-2017-12331 Local Security Bypass Vulnerability
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos
Cisco NX-OS System Software Patch Signature Bypass VulnerabilityVendor Advisory
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