Vulnerability Name:

CVE-2019-12666 (CCN-167589)

Assigned:2019-09-25
Published:2019-09-25
Updated:2019-10-09
Summary:A vulnerability in the Guest Shell of Cisco IOS XE Software could allow an authenticated, local attacker to perform directory traversal on the base Linux operating system of Cisco IOS XE Software. The vulnerability is due to incomplete validation of certain commands. An attacker could exploit this vulnerability by first accessing the Guest Shell and then entering specific commands. A successful exploit could allow the attacker to execute arbitrary code on the base Linux operating system.
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
6.7 Medium (CCN 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 (CCN 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
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-22
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2019-12666

Source: XF
Type: UNKNOWN
cisco-cve201912666-dir-traversal(167589)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190925-dt
Cisco IOS XE Software Path Traversal Vulnerability

Source: CISCO
Type: Vendor Advisory
20190925 Cisco IOS XE Software Path Traversal Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:*:*:*:*:*:*:*:* (Version >= 16.4 and < 16.6.5)
  • OR cpe:/o:cisco:ios_xe:*:*:*:*:*:*:*:* (Version >= 16.7 and < 16.9.3)
  • OR cpe:/o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe *
    cisco ios xe *
    cisco ios xe 16.11.1
    cisco ios xe 16.5.1