Vulnerability Details : CVE-2018-15391
A vulnerability in certain IPv4 fragment-processing functions of Cisco Remote PHY Software could allow an unauthenticated, remote attacker to impact traffic passing through a device, potentially causing a denial of service (DoS) condition. The vulnerability is due to the affected software not validating and calculating certain numerical values in IPv4 packets that are sent to an affected device. An attacker could exploit this vulnerability by sending malformed IPv4 traffic to an affected device. A successful exploit could allow the attacker to disrupt the flow of certain IPv4 traffic passing through an affected device, which could result in a DoS condition.
Vulnerability category: Denial of service
Products affected by CVE-2018-15391
- cpe:2.3:a:cisco:remote:phy:-:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-15391
0.50%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-15391
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2018-15391
-
Assigned by: ykramarz@cisco.com (Secondary)
-
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-15391
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-phy-ipv4-dos
Cisco Remote PHY IPv4 Fragment Denial of Service VulnerabilityVendor Advisory
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