VDB-96714 · CVE-2017-5933 · BID 96151

Citrix NetScaler ADC/NetScaler Gateway up to 10.4/11.1 GCM Nonce Generator information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Citrix NetScaler ADC and NetScaler Gateway up to 10.4/11.1. This affects an unknown part of the component GCM Nonce Generator. The manipulation results in information disclosure. This vulnerability is cataloged as CVE-2017-5933. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Citrix NetScaler ADC and NetScaler Gateway up to 10.4/11.1 (Network Management Software). Affected is some unknown functionality of the component GCM Nonce Generator. The manipulation with an unknown input 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, and integrity. CVE summarizes:

Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 does not properly generate GCM nonces, which makes it easier for remote attackers to obtain the authentication key and spoof data by leveraging a reused nonce in a session and a "forbidden attack," a similar issue to CVE-2016-0270.

The bug was discovered 02/06/2017. The weakness was shared 02/08/2017 by Hanno Böck (GitHub Repository). The advisory is available at github.com. This vulnerability is traded as CVE-2017-5933 since 02/08/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370310 (Citrix NetScaler ADC and Gateway Arbitrary GCM Nonce Generation Vulnerability (CTX220329)).

Upgrading eliminates this vulnerability. The upgrade is hosted for download at support.citrix.com.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 96151†). The entries VDB-96657 and VDB-96658 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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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OpenVAS ID: 801854
OpenVAS Name: Vulnerability in Citrix NetScaler Application Delivery Controller and Citrix NetScaler Gateway GCM Nonce Generation
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: support.citrix.com

Timelineinfo

02/06/2017 🔍
02/06/2017 +0 days 🔍
02/08/2017 +2 days 🔍
02/08/2017 +0 days 🔍
02/08/2017 +0 days 🔍
02/08/2017 +0 days 🔍
08/25/2024 +2755 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: github.com
Researcher: Hanno Böck
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5933 (🔍)
GCVE (CVE): GCVE-0-2017-5933
GCVE (VulDB): GCVE-100-96714
SecurityFocus: 96151 - Citrix NetScaler Application Delivery Controller and Gateway Information Disclosure Vulnerability
OSVDB: - CVE-2017-5933 - Citrix - Multiple Products - GCM Nonce Generation Issue

See also: 🔍

Entryinfo

Created: 02/08/2017 21:11
Updated: 08/25/2024 20:07
Changes: 02/08/2017 21:11 (65), 05/04/2017 12:55 (2), 09/01/2020 09:17 (6), 08/25/2024 20:07 (20)
Complete: 🔍
Committer: misc
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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