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Cisco NX-OS Software Arbitrary File Overwrite Vulnerability

cisco-sa-20190515-nxos-file-write · Medium · Published · Updated

A vulnerability in the CLI implementation of a specific command used for image maintenance for Cisco NX-OS Software could allow an authenticated, local attacker to overwrite any file on the file system including system files. These file overwrites by the attacker are accomplished at the root privilege level. The vulnerability occurs because there is no verification of user-input parameters and or digital-signature verification for image files when using a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device and issuing a command at the CLI. Because an exploit could allow the attacker to overwrite any file on the disk, including system files, a denial of service (DoS) condition could occur. The attacker must have valid administrator credentials for the affected device to exploit this vulnerability. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-file-write

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2019-1729
Cisco Bug IDsCSCvh76022, CSCvj03856
CVSS ScoreBase 6.7
Base 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco NX-OS Software, Cisco NX-OS Software 7.0(3), Cisco NX-OS Software 7.0(0)N1(1), Cisco NX-OS Software 7.0(1)N1(1), Cisco NX-OS Software 7.0(1)N1(3), Cisco NX-OS Software 7.0(2)I2(2c), Cisco NX-OS Software 7.0(2)N1(1), Cisco NX-OS Software 7.0(2)N1(1a), Cisco NX-OS Software 7.0(3)F1(1), Cisco NX-OS Software 7.0(3)F2(1), Cisco NX-OS Software 7.0(3)F2(2), Cisco NX-OS Software 7.0(3)F3(1), Cisco NX-OS Software 7.0(3)F3(2), Cisco NX-OS Software 7.0(3)F3(3), Cisco NX-OS Software 7.0(3)F3(3a), Cisco NX-OS Software 7.0(3)F3(4), Cisco NX-OS Software 7.0(3)F3(3c), Cisco NX-OS Software 7.0(3)F3(3b), Cisco NX-OS Software 7.0(3)I1(1), Cisco NX-OS Software 7.0(3)I1(1a), Cisco NX-OS Software 7.0(3)I1(1b), Cisco NX-OS Software 7.0(3)I1(2), Cisco NX-OS Software 7.0(3)I1(3), Cisco NX-OS Software 7.0(3)I1(3a), Cisco NX-OS Software 7.0(3)I1(3b), Cisco NX-OS Software 7.0(3)I2(2a), Cisco NX-OS Software 7.0(3)I2(2b), Cisco NX-OS Software 7.0(3)I2(2c), Cisco NX-OS Software 7.0(3)I2(2d), Cisco NX-OS Software 7.0(3)I2(2e), Cisco NX-OS Software 7.0(3)I2(3), Cisco NX-OS Software 7.0(3)I2(4), Cisco NX-OS Software 7.0(3)I2(5), Cisco NX-OS Software 7.0(3)I2(1), Cisco NX-OS Software 7.0(3)I2(1a), Cisco NX-OS Software 7.0(3)I2(2), Cisco NX-OS Software 7.0(3)I3(1), Cisco NX-OS Software 7.0(3)I4(1), Cisco NX-OS Software 7.0(3)I4(2), Cisco NX-OS Software 7.0(3)I4(3), Cisco NX-OS Software 7.0(3)I4(4), Cisco NX-OS Software 7.0(3)I4(5), Cisco NX-OS Software 7.0(3)I4(6), Cisco NX-OS Software 7.0(3)I4(7), Cisco NX-OS Software 7.0(3)I4(8), Cisco NX-OS Software 7.0(3)I4(8a), Cisco NX-OS Software 7.0(3)I4(8b), Cisco NX-OS Software 7.0(3)I4(8z), Cisco NX-OS Software 7.0(3)I7(5a)

CSAF Product Statuses

Product Status Source CVE Rows
7.0(0)N1(1) known_affected cisco_csaf CVE-2019-1729 1
7.0(1)N1(1) known_affected cisco_csaf CVE-2019-1729 1
7.0(1)N1(3) known_affected cisco_csaf CVE-2019-1729 1
7.0(2)I2(2c) known_affected cisco_csaf CVE-2019-1729 1
7.0(2)N1(1) known_affected cisco_csaf CVE-2019-1729 1
7.0(2)N1(1a) known_affected cisco_csaf CVE-2019-1729 1
7.0(3) known_affected cisco_csaf CVE-2019-1729 1
7.0(3)F1(1) known_affected cisco_csaf CVE-2019-1729 1
7.0(3)F2(1) known_affected cisco_csaf CVE-2019-1729 1
7.0(3)F2(2) known_affected cisco_csaf CVE-2019-1729 1
7.0(3)F3(1) known_affected cisco_csaf CVE-2019-1729 1
7.0(3)F3(2) known_affected cisco_csaf CVE-2019-1729 1

Showing 12 of 48 CSAF status groups; 36 more not shown.

Related Products

Product CVE Evidence
Cisco NX-OS Software CVE-2019-1729 Cisco OpenVuln