Cisco Small Business RV/SA500 TLS Handshake Key information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Cisco Small Business RV and SA500. The impacted element is an unknown function of the component TLS Handshake. Executing a manipulation can lead to information disclosure (Key). This vulnerability appears as CVE-2015-6418. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Cisco Small Business RV and SA500 (the affected version unknown). This vulnerability affects an unknown part of the component TLS Handshake. The manipulation with an unknown input leads to a information disclosure vulnerability (Key). 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, integrity, and availability. CVE summarizes:

The random-number generator on Cisco Small Business RV routers 4.x and SA500 security appliances 2.2.07 does not have sufficient entropy, which makes it easier for remote attackers to determine a TLS key pair via unspecified computations upon handshake key-exchange data, aka Bug ID CSCus15224.

The weakness was presented 12/13/2015 as CSCus15224 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2015-6418 since 08/17/2015. 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 current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/01/2022). The MITRE ATT&CK project declares the attack technique as T1592.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at SecurityFocus (BID 78876†) and Vulnerability Center (SBV-55227†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
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

Name: Key
Class: Information disclosure / Key
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

08/17/2015 🔍
12/10/2015 +115 days 🔍
12/12/2015 +2 days 🔍
12/13/2015 +1 days 🔍
12/14/2015 +1 days 🔍
12/14/2015 +0 days 🔍
07/01/2022 +2390 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCus15224
Status: Confirmed

CVE: CVE-2015-6418 (🔍)
GCVE (CVE): GCVE-0-2015-6418
GCVE (VulDB): GCVE-100-79768
SecurityFocus: 78876
SecurityTracker: 1034408
Vulnerability Center: 55227 - [cisco-sa-20151210-dwvr] Cisco RV Series Routers, SA520, SA520W and SA540 Remote Information Disclosure, Medium

Entryinfo

Created: 12/14/2015 09:32
Updated: 07/01/2022 00:39
Changes: 12/14/2015 09:32 (49), 05/14/2018 10:41 (7), 07/01/2022 00:39 (3)
Complete: 🔍
Cache ID: 216:797:103

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

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