VDB-79432 · CVE-2015-4334 · SBV-54832

Blue Coat ProxySG 6.2.16.4/6.5.7.0/6.6.2.0 SGOS information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Blue Coat ProxySG 6.2.16.4/6.5.7.0/6.6.2.0. Affected by this issue is some unknown functionality of the component SGOS. Executing a manipulation can lead to information disclosure. This vulnerability is tracked as CVE-2015-4334. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Blue Coat ProxySG 6.2.16.4/6.5.7.0/6.6.2.0 (Firewall Software). It has been declared as problematic. This vulnerability affects an unknown part of the component SGOS. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The default configuration of SGOS in Blue Coat ProxySG before 6.2.16.5, 6.5 before 6.5.7.1, and 6.6 before 6.6.2.1 forwards authentication challenges from upstream origin content servers (OCS) when used in an explicit proxy deployment, which makes it easier for remote attackers to obtain sensitive information via a 407 (aka Proxy Authentication Required) HTTP status code, as demonstrated when using NTLM authentication.

The weakness was disclosed 12/07/2015 (Website). The advisory is shared for download at twitter.com. This vulnerability was named CVE-2015-4334. 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 MITRE ATT&CK project declares the attack technique as T1592.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 38627 (Blue Coat ProxySG NTLM Hashes Disclosure Vulnerability).

Upgrading to version 6.2.16.5, 6.5.7.1 or 6.6.2.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Vulnerability Center (SBV-54832†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ProxySG 6.2.16.5/6.5.7.1/6.6.2.1

Timelineinfo

06/04/2015 🔍
12/07/2015 +186 days 🔍
12/07/2015 +0 days 🔍
12/07/2015 +0 days 🔍
12/08/2015 +1 days 🔍
12/08/2015 +0 days 🔍
11/24/2024 +3274 days 🔍

Sourcesinfo

Advisory: twitter.com
Status: Confirmed

CVE: CVE-2015-4334 (🔍)
GCVE (CVE): GCVE-0-2015-4334
GCVE (VulDB): GCVE-100-79432
SecurityTracker: 1032149
Vulnerability Center: 54832 - Blue Coat ProxySG Remote Information Disclosure via a 407 HTTP Status Code, Medium

Entryinfo

Created: 12/08/2015 10:30
Updated: 11/24/2024 10:58
Changes: 12/08/2015 10:30 (38), 01/10/2018 14:24 (9), 06/28/2022 15:07 (2), 06/28/2022 15:13 (7), 11/24/2024 10:58 (18)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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