AT&T U-verse up to 9.2.2h0d83 on NVG589/NVG599 IP Passthrough Mode TCP Connection improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in AT&T U-verse up to 9.2.2h0d83 on NVG589/NVG599 and classified as critical. Affected by this vulnerability is an unknown functionality of the component IP Passthrough Mode. Performing a manipulation as part of TCP Connection results in improper authentication. This vulnerability is known as CVE-2017-14117. Remote exploitation of the attack is possible. No exploit is available. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability, which was classified as critical, was found in AT&T U-verse up to 9.2.2h0d83 on NVG589/NVG599. This affects an unknown part of the component IP Passthrough Mode. The manipulation as part of a TCP Connection leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589 and NVG599 devices, when IP Passthrough mode is not used, configures an unauthenticated proxy service on WAN TCP port 49152, which allows remote attackers to establish arbitrary TCP connections to intranet hosts by sending \x2a\xce\x01 followed by other predictable values.

The bug was discovered 08/31/2017. The weakness was published 09/03/2017 (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2017-14117 since 09/03/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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/49152.

The vulnerability is also documented in the databases at Tenable (102916) and SecurityFocus (BID 100585†). Similar entries are available at VDB-106092, VDB-106093 and VDB-106094. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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

08/31/2017 🔍
08/31/2017 +0 days 🔍
09/01/2017 +1 days 🔍
09/03/2017 +2 days 🔍
09/03/2017 +0 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-2017-14117 (🔍)
GCVE (CVE): GCVE-0-2017-14117
GCVE (VulDB): GCVE-100-106095
SecurityFocus: 100585 - AT&T U-verse Arris Modems Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 09/04/2017 09:03
Updated: 01/10/2021 16:14
Changes: 09/04/2017 09:03 (71), 12/29/2019 17:12 (3), 01/10/2021 16:14 (2)
Complete: 🔍
Cache ID: 216::103

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