CVE-2023-20198
Scores
EPSS
Percentile: 94.4%
CVSS
CVSS Score: 10.0/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Changed (C)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Description
Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software. We are updating the list of fixed releases and adding the Software Checker. Our investigation has determined that the actors exploited two previously unknown issues. The attacker first exploited CVE-2023-20198 to gain initial access and issued a privilege 15 command to create a local user and password combination. This allowed the user to log in with normal user access. The attacker then exploited another component of the web UI feature, leveraging the new local user to elevate privilege to root and write the implant to the file system. Cisco has assigned CVE-2023-20273 to this issue. CVE-2023-20198 has been assigned a CVSS Score of 10.0. CVE-2023-20273 has been assigned a CVSS Score of 7.2. Both of these CVEs are being tracked by CSCwh87343.
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Sources
CWEs
Related Vulnerabilities
Exploits
Vulnerable Software (1)
Type: Configuration
Vendor: cisco
Product: ios_xe
Operating System: * * *
{
"cpe_match": [
{
"cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
"versionEndExcluding": "16.12.10a",
"versionStartIncluding": "16.12",
"vulnerable": true
},
...{
"cpe_match": [
{
"cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
"versionEndExcluding": "16.12.10a",
"versionStartIncluding": "16.12",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
"versionEndExcluding": "17.3.8a",
"versionStartIncluding": "17.3",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
"versionEndExcluding": "17.6.6a",
"versionStartIncluding": "17.6",
"vulnerable": true
},
{
"cpe23uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
"versionEndExcluding": "17.9.4a",
"versionStartIncluding": "17.9",
"vulnerable": true
}
],
"operator": "OR"
}Source: nvd