RCE in Cisco Asr 5000
CVE-2018-0122
A vulnerability in the CLI of the Cisco StarOS operating system for Cisco ASR 5000 Series Aggregation Services Routers could allow an authenticated, local attacker to overwrite system files that are stored in the flash memory of an affected system. The vulnerability is due to insufficient validation of user-supplied input by the affected operating system. An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command for the affected operating system. A successful exploit could allow the attacker to overwrite or modify arbitrary files that are stored in the flash memory of an affected system. To exploit this vulnerability, the attacker would need to authenticate to an affected system by using valid administrator credentials. Cisco Bug IDs: CSCvf93335.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cisco Asr 5000
- Cisco Asr 5500
- Cisco Asr 5700
- Cisco Staros — versions 21.3.0.67664
- Cisco Staros For Asr 5000 Series Aggregation Services Routers — versions Cisco StarOS for Cisco ASR 5000 Series Aggregation Services Routers
Weakness classification (CWE)
References
- www.securitytracker.com/id/1040340 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/103028 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207… (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-0122?
- CVE-2018-0122 is a medium-severity vulnerability in Cisco Asr 5000, classified under Improper Input Validation. CVSS score: 4.4/10. Published 2018-02-08.
- How severe is CVE-2018-0122?
- Medium severity. CVSS v3 base score is 4.4 out of 10.