Improper input validation in Cisco Asr 5000 Software
CVE-2017-6773
A vulnerability in the CLI of Cisco ASR 5000 Series Aggregated Services Routers running the Cisco StarOS operating system could allow an authenticated, local attacker to bypass the CLI restrictions and execute commands on the underlying operating system. The vulnerability is due to insufficient input sanitization of user-supplied input at the CLI. An attacker could exploit this vulnerability by crafting a script on the device that will allow them to bypass built-in restrictions. An exploit could allow the unauthorized user to launch the CLI directly from a command shell. Cisco Bug IDs: CSCvd47722. Known Affected Releases: 21.0.v0.65839.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.0% 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 Software — versions 21.0.v0.65839
- Cisco Systems, Inc. Staros For Asr 5000 Series Aggregated Services Routers — versions 21.0.v0.65839
Weakness classification (CWE)
References
- www.securityfocus.com/bid/100376 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170816… (vendor-advisory, Vendor Advisory)
- www.securitytracker.com/id/1039181 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-6773?
- CVE-2017-6773 is a medium-severity vulnerability in Cisco Asr 5000 Software, classified under Improper Input Validation. CVSS score: 6.7/10. Published 2017-08-17.
- How severe is CVE-2017-6773?
- Medium severity. CVSS v3 base score is 6.7 out of 10.