VDB-106092 · CVE-2017-10793 · BID 100585

AT&T U-verse up to 9.2.2h0d83 on NVG589/NVG599 IP Passthrough Mode sbdc.ha username/password information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability classified as critical has been found in AT&T U-verse up to 9.2.2h0d83 on NVG589/NVG599. Affected is an unknown function of the file sbdc.ha of the component IP Passthrough Mode. The manipulation of the argument username/password with the input value bdctest leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589, NVG599, and unspecified other devices, when IP Passthrough mode is not used, configures an sbdc.ha WAN TCP service on port 61001 with the bdctest account and the bdctest password, which allows remote attackers to obtain sensitive information (such as the Wi-Fi password) by leveraging knowledge of a hardware identifier, related to the Bulk Data Collection (BDC) mechanism defined in Broadband Forum technical reports.

The bug was discovered 07/02/2017. The weakness was disclosed 09/03/2017 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2017-10793 since 07/02/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability was handled as a non-public zero-day exploit for at least 61 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102916 (AT&T U-verse Arris Modems NVG589 / NVG599 / 5268AC Multiple Vulnerabilities (SharknATTo)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r.

It is possible to mitigate the weakness by firewalling tcp/61001.

The vulnerability is also documented in the vulnerability database at Tenable (102916). The entries 106093, 106094 and 106095 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102916
Nessus Name: AT&T U-verse Arris Modems NVG589 / NVG599 / 5268AC Multiple Vulnerabilities (SharknATTo)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

07/02/2017 🔍
07/02/2017 +0 days 🔍
08/31/2017 +59 days 🔍
09/01/2017 +1 days 🔍
09/03/2017 +2 days 🔍
09/03/2017 +0 days 🔍
09/04/2017 +1 days 🔍
01/10/2021 +1224 days 🔍

Sourcesinfo

Advisory: securityfocus.com
Researcher: Nomotion
Status: Not defined

CVE: CVE-2017-10793 (🔍)
SecurityFocus: 100585

See also: 🔍

Entryinfo

Created: 09/04/2017 09:02
Updated: 01/10/2021 16:01
Changes: 09/04/2017 09:02 (72), 12/29/2019 16:56 (1), 01/10/2021 16:01 (5)
Complete: 🔍

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