Juniper Pulse Secure up to 7.1/8.0/8.1 TCP Hardware Acceleration input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

A vulnerability was found in Juniper Pulse Secure up to 7.1/8.0/8.1. It has been declared as critical. This vulnerability affects some unknown functionality of the component TCP Hardware Acceleration. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 07/29/2015 by Yngve N. Pettersen with TLS Prober Labs as TSB16756 as confirmed knowledge base article (Website). The advisory is shared for download at kb.juniper.net. This vulnerability was named CVE-2015-5369 since 07/06/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:

On Pulse Connect Secure gateways (SA and MAG devices) that offer Hardware Acceleration, if Hardware Acceleration feature is enabled then TLS connections may be vulnerable to a protocol handshake vulnerability. This issue could potentially allow an attacker to gain man in the middle (MITM) access between a client and the Pulse Secure server, only if they utilize a second separate exploit.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 38613 (TLS Client Finish Message Validation Vulnerability).

Upgrading to version 7.1r22.2, 8.0r13 or 8.1r5 eliminates this vulnerability. It is possible to mitigate the problem by applying the configuration setting Maintenance / System / Options / Disable Hardware Acceleration. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (105288).

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Pulse Secure 7.1r22.2/8.0r13/8.1r5
Config: Maintenance / System / Options / Disable Hardware Acceleration

Timelineinfo

07/06/2015 🔍
07/29/2015 +23 days 🔍
08/01/2015 +3 days 🔍
08/03/2015 +2 days 🔍
08/11/2015 +8 days 🔍
08/28/2015 +17 days 🔍
06/07/2022 +2475 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: TSB16756
Researcher: Yngve N. Pettersen
Organization: TLS Prober Labs
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5369 (🔍)
X-Force: 105288 - Juniper Pulse Secure TCP information disclosure
SecurityTracker: 1033166 - Juniper Pulse Secure TCP Hardware Acceleration Flaw Lets Remote Users Access Data on the Target System

Entryinfo

Created: 08/03/2015 16:47
Updated: 06/07/2022 09:59
Changes: 08/03/2015 16:47 (66), 09/08/2017 14:42 (1), 06/07/2022 09:59 (3)
Complete: 🔍

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