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.
References
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z | Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
17 Jun 2024, 13:31
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| CWE | NVD-CWE-Other |
25 Jan 2024, 17:15
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| References |
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15 Nov 2023, 19:29
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| References | () http://packetstormsecurity.com/files/175674/Cisco-IOX-XE-Unauthenticated-Remote-Code-Execution.html - Exploit, Third Party Advisory, VDB Entry |
14 Nov 2023, 03:15
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| References |
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07 Nov 2023, 19:15
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| Summary | 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. |
25 Oct 2023, 18:17
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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24 Oct 2023, 14:24
| Type | Values Removed | Values Added |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 10.0 |
| First Time |
Cisco
Cisco ios Xe |
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| CWE | NVD-CWE-noinfo | |
| CPE | cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* | |
| References | (MISC) https://www.darkreading.com/vulnerabilities-threats/critical-unpatched-cisco-zero-day-bug-active-exploit - Third Party Advisory | |
| References | (MISC) https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z - Mitigation, Vendor Advisory | |
| References | (MISC) https://arstechnica.com/security/2023/10/actively-exploited-cisco-0-day-with-maximum-10-severity-gives-full-network-control/ - Press/Media Coverage, Third Party Advisory |
16 Oct 2023, 22:15
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| References |
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16 Oct 2023, 21:15
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| References |
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16 Oct 2023, 16:15
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| New CVE |
Information
Published : 2023-10-16 16:15
Updated : 2024-06-17 13:31
NVD link : CVE-2023-20198
Mitre link : CVE-2023-20198
CVE.ORG link : CVE-2023-20198
JSON object : View
Products Affected
cisco
- ios_xe
CWE