Cisco AsyncOS 7.1 Network Stack resource management

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 (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco AsyncOS 7.1. It has been rated as problematic. Impacted is an unknown function of the component Network Stack. This manipulation causes resource management. This vulnerability is handled as CVE-2015-6321. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Cisco AsyncOS 7.1 and classified as critical. Affected by this vulnerability is an unknown function of the component Network Stack. 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 11/04/2015 with Cisco as cisco-sa-20151104-aos as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2015-6321 since 08/17/2015. The exploitation appears to be easy. 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 vulnerability scanner Nessus provides a plugin with the ID 86914 (Cisco Email Security Appliance Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43451 (Cisco AsyncOS TCP Flood Denial of Service Vulnerability (cisco-sa-20151104-aos)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (107834), Tenable (86914), SecurityFocus (BID 77434†) and Vulnerability Center (SBV-54266†). Entries connected to this vulnerability are available at VDB-75882 and VDB-79050. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 86914
Nessus Name: Cisco Email Security Appliance Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco Email Security Appliance AsyncOS TCP Flood Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/12/2015 🔍
08/17/2015 +66 days 🔍
11/04/2015 +79 days 🔍
11/04/2015 +0 days 🔍
11/05/2015 +1 days 🔍
11/05/2015 +0 days 🔍
11/05/2015 +0 days 🔍
11/10/2015 +5 days 🔍
11/18/2015 +8 days 🔍
11/18/2024 +3288 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20151104-aos
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-6321 (🔍)
GCVE (CVE): GCVE-0-2015-6321
GCVE (VulDB): GCVE-100-79051
X-Force: 107834 - Cisco AsyncOS TCP denial of service
SecurityFocus: 77434 - Cisco AsyncOS CVE-2015-6321 Denial of Service Vulnerability
SecurityTracker: 1034060
Vulnerability Center: 54266 - [cisco-sa-20151104-aos] Cisco AsyncOS on ESA, SMA and WSA Remote DoS via TCP Packets, Medium

See also: 🔍

Entryinfo

Created: 11/05/2015 11:02
Updated: 11/18/2024 11:30
Changes: 11/05/2015 11:02 (52), 04/11/2018 11:33 (23), 06/26/2022 10:04 (3), 11/18/2024 11:30 (16)
Complete: 🔍
Cache ID: 216:821:103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!