VDB-92251 · CVE-2016-6393 · BID 93196

Cisco IOS/IOS XE AAA Login resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS and IOS XE. It has been classified as problematic. Impacted is an unknown function of the component AAA Login. This manipulation causes resource management. This vulnerability is handled as CVE-2016-6393. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS and IOS XE (Router Operating System) (unknown version). Affected by this vulnerability is an unknown code block of the component AAA Login. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability.

The weakness was released 09/28/2016 with Cisco as cisco-sa-20160928-aaados as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2016-6393 since 07/26/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 316032 (Cisco IOS Software AAA Login Denial of Service Vulnerability (cisco-sa-20160928-aaados)).

Upgrading eliminates this vulnerability. It is possible to mitigate the problem by applying the configuration setting no aaa authentication fail-message. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 93196†) and SecurityTracker (ID 1036914†). Additional details are provided at tools.cisco.com. Entries connected to this vulnerability are available at VDB-92252, VDB-92253, VDB-92254 and VDB-92255. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Resource management
CWE: CWE-399 / CWE-404
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: 900556
OpenVAS Name: Cisco IOS Software AAA Login Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Config: no aaa authentication fail-message

Timelineinfo

07/26/2016 🔍
09/28/2016 +64 days 🔍
09/28/2016 +0 days 🔍
09/28/2016 +0 days 🔍
09/28/2016 +0 days 🔍
09/30/2016 +2 days 🔍
10/05/2016 +5 days 🔍
09/21/2022 +2177 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20160928-aaados
Organization: Cisco
Status: Confirmed

CVE: CVE-2016-6393 (🔍)
GCVE (CVE): GCVE-0-2016-6393
GCVE (VulDB): GCVE-100-92251

OVAL: 🔍

SecurityFocus: 93196 - Cisco IOS and IOS XE Software CVE-2016-6393 Denial of Service Vulnerability
SecurityTracker: 1036914

scip Labs: https://www.scip.ch/en/?labs.20150108
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/30/2016 10:15
Updated: 09/21/2022 14:53
Changes: 09/30/2016 10:15 (68), 04/29/2019 10:21 (11), 09/21/2022 14:53 (3)
Complete: 🔍
Cache ID: 216:3CD:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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