Medium severity · published May 15, 2019
CVE-2019-1808
A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a…
4.4
CVSS
0.2%
EPSS
No
On KEV
Description
A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by loading an unsigned software patch on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NX
Nx-os · Cisco
7.3 before 8.1\(1a\); 8.2 before 8.3\(1\); 7.2 before 7.3\(3\)d1\(1\); 8.0 before 8.2\(3\) · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-1808
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-1808
Broken Link
http://www.securityfocus.com/bid/108367
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-spsv
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