Vulnerability CVE-2017-16953
Published: 2017-12-01

Description:
connoppp.cgi on ZTE ZXDSL 831CII devices does not require HTTP Basic Authentication, which allows remote attackers to modify the PPPoE configuration or set up a malicious configuration via a GET request.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
ZTE ZXDSL 831CII Improper Access Restrictions
Ibad Shah
28.11.2017

Type:

CWE-287

 (Improper Authentication)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
ZTE -> Zxdsl 831cii firmware 

 References:
http://packetstormsecurity.com/files/145121/ZTE-ZXDSL-831-Unauthorized-Configuration-Access-Bypass.html
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1008762
https://www.exploit-db.com/exploits/43188/
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