Vulnerability Name:

CVE-2017-6773 (CCN-130502)

Assigned:2017-08-16
Published:2017-08-16
Updated:2017-08-25
Summary: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.
CVSS v3 Severity:6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.0 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2017-6773

Source: BID
Type: Third Party Advisory, VDB Entry
100376

Source: CCN
Type: BID-100376
Cisco StarOS for ASR 5000 Series Routers CVE-2017-6773 Local Command Injection Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1039181

Source: XF
Type: UNKNOWN
cisco-cve20176773-sec-bypass(130502)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20170816-staros1
Cisco StarOS for ASR 5000 Series Routers Command-Line Interface Security Bypass Vulnerability

Source: CISCO
Type: Vendor Advisory
20170816 Cisco StarOS for ASR 5000 Series Routers Command-Line Interface Security Bypass Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:asr_5000_software:21.0.v0.65839:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:staros:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco asr 5000 software 21.0.v0.65839
    cisco staros *