Vulnerability Name:

CVE-2019-1596 (CCN-157855)

Assigned:2018-12-06
Published:2019-03-06
Updated:2020-10-08
Summary:A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level to root. The attacker must authenticate with valid user credentials. The vulnerability is due to incorrect permissions of a system executable. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level to root. Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/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): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/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): Low
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-732
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2019-1596

Source: BID
Type: Third Party Advisory, VDB Entry
107340

Source: XF
Type: UNKNOWN
cisco-cve20191596-priv-esc(157855)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20190306-nxos-pe
Cisco NX-OS Software Bash Shell Privilege Escalation Vulnerability

Source: CISCO
Type: Patch, Vendor Advisory
20190306 Cisco NX-OS Software Bash Shell Privilege Escalation Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version < 7.0(3)i4(9))
  • OR cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version >= 7.0(3)i5 and < 7.0(3)i7(4))
  • AND
  • cpe:/h:cisco:nexus_3000:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version >= 7.0(3)i7 and < 7.0(3)i7(4))
  • AND
  • cpe:/h:cisco:nexus_3500:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version >= 7.0(3)f3(1) and < 7.0(3)f3(5))
  • AND
  • cpe:/h:cisco:nexus_3600:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version < 7.0(3)i4(9))
  • OR cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version >= 7.0(3)i5 and < 7.0(3)i7(4))
  • AND
  • cpe:/h:cisco:nexus_9000:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:cisco:nx-os:*:*:*:*:*:*:*:* (Version >= 7.0(3)f3(1) and < 7.0(3)f3(5))
  • AND
  • cpe:/h:cisco:nexus_9500:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco nx-os *
    cisco nx-os *
    cisco nexus 3000 -
    cisco nx-os *
    cisco nexus 3500 -
    cisco nx-os *
    cisco nexus 3600 -
    cisco nx-os *
    cisco nx-os *
    cisco nexus 9000 -
    cisco nx-os *
    cisco nexus 9500 -