6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
0.007 Low
EPSS
Percentile
79.7%
DASAN H660RM allows for unauthenticated ping access, has a hardcoded key for encryption, and logs sensitive information into /tmp.
DASAN H660RM Information Disclosure / Hardcoded Key
CVE-2019-9974: diag_tool.cgi on DASAN H660RM devices with firmware
1.03-0022 allows spawning ping processes without any authorization
leading to information disclosure and DoS attacks
Remote attacker could enumerate hosts on LAN interface sending
requests to /cgi-bin/diag_tool.cgi with ip parameter set to target IP
address. Lack of authorization in /cgi-bin/diag_get_result.cgi allow
retrieval of results. Each call to diag_get_result.cgi retrieves one
line of ping (or traceroute) output.
Same CGI script has another weakness, CWE-400: Uncontrolled Resource
Consumption, which allows memory memory exhaustion Denial of Service
(DoS) attack against device. Around 170 spawned ping processes is
enough to cause crash and reboot of router. PoC exploit available.
More: https://blog.burghardt.pl/2019/03/diag_tool-cgi-on-dasan-h660rm-devices-with-firmware-1-03-0022-allows-spawning-ping-processes-without-any-authorization-leading-to-information-disclosure-and-dos-attacks/
CVE-2019-9975: syslog_tool.cgi on DASAN H660RM devices with firmware
1.03-0022 uses a hard-coded key for logs encryption
DASAN uses a hard-coded key βdasanektks123β for logs encryption. Data
stored using this key can be decrypted by anyone able to access this
key.
More: https://blog.burghardt.pl/2019/03/syslog_tool-cgi-on-dasan-h660rm-devices-with-firmware-1-03-0022-uses-a-hard-coded-key-for-logs-encryption/
CVE-2019-9976: Boa Webserver on DASAN H660RM devices with firmware
1.03-0022 saves post data, including credentials, to /tmp/boa-temp
Exploitation is possible for users logged in over telnet of SSH. If
user logged though Web UI and until he make any other POST request,
his credentials can be retrieved with:
$ cat /tmp/boa-temp
StatusActionFlag=-1&Username=admin&Password=vertex25
More: https://blog.burghardt.pl/2019/03/boa-webserver-on-dasan-h660rm-devices-with-firmware-1-03-0022-saves-post-data-including-credentials-to-tmp-boa-temp/
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
0.007 Low
EPSS
Percentile
79.7%