National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-15800 Detail

Current Description

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Due to lack of input validation in the cmd_sys_traceroute_exec(), cmd_sys_arp_clear(), and cmd_sys_ping_exec() functions in the libclicmd.so library contained in the firmware, an attacker could leverage these functions to call system() and execute arbitrary commands on the switches. (Note that these functions are currently not called in this version of the firmware, however an attacker could use other vulnerabilities to finally use these vulnerabilities to gain code execution.)

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.html Exploit Third Party Advisory
https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahh.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahi.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aazi.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 4 ( hide )
 cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahj.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 5 ( hide )
 cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahk.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 6 ( hide )
 cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahl.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 7 ( hide )
 cpe:2.3:o:zyxel:gs1900-24hp_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahm.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-24hp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 8 ( hide )
 cpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aahn.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 9 ( hide )
 cpe:2.3:o:zyxel:gs1900-48hp_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2.50\(aaho.0\)c0
Running on/with
 cpe:2.3:h:zyxel:gs1900-48hp:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-15800
NVD Published Date:
11/14/2019
NVD Last Modified:
11/21/2019