Cisco Web/Mail Security Appliance up to 7.7/8.1 Web Framework HTTP/HTTPS Request resource management

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7.2	$0-$5k	0.00

A vulnerability classified as critical has been found in Cisco Web and Mail Security Appliance up to 7.7/8.1. This affects an unknown code of the component Web Framework. The manipulation as part of a HTTP/HTTPS Request leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

The management GUI in the web framework in IronPort AsyncOS on Cisco Web Security Appliance devices before 7.1.3-013, 7.5 before 7.5.0-838, and 7.7 before 7.7.0-602; Email Security Appliance devices before 7.1.5-106 and 7.3, 7.5, and 7.6 before 7.6.3-019; and Content Security Management Appliance devices before 7.9.1-102 and 8.0 before 8.0.0-404 allows remote attackers to cause a denial of service (system hang) via a series of (1) HTTP or (2) HTTPS requests to a management interface, aka Bug IDs CSCzv58669, CSCzv63329, and CSCzv78669.

The advisory summarizes:

The Cisco Email Security Appliance provides email management and protection combining antispam, antivirus, and encryption technologies.

The weakness was shared 06/26/2013 as cisco-sa-20130626-esa as confirmed advisory (Website) via cisco-sa-20130626-esa. It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2013-3385 since 05/06/2013. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A full TCP three-way handshake is required to exploit this vulnerability

The vulnerability scanner Nessus provides a plugin with the ID 69076 (Multiple Vulnerabilities in Cisco Email Security Appliance (cisco-sa-20130626-esa)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43414 (Multiple Vulnerabilities in Cisco IronPort AsyncOS Software (cisco-sa-20130626)). The advisory illustrates:

This vulnerability can be triggered by IPv4 and IPv6 traffic directed to the management IP addresses of the affected system. This vulnerability can be exploited over the default management ports, TCP port 80 or TCP port 443.

Upgrading to version 7.1.5-016 eliminates this vulnerability.It is possible to mitigate the weakness by firewalling tcp/80 & tcp/443. 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 advisory contains the following remark:

A hard reboot of the affected system is needed to restore full functionality. (…) The default management ports can be reconfigured on the system. (…) Administrators can use the interfaceconifg command to disable appliance management via the GUI. Alternatively, this can be done via the GUI by editing the management interface properties under Network->IP interfaces-> Edit and then selecting Disable Appliance Management. (…) Administrators can also limit the attack surface by restricting IP addresses that can access the management interface. This can be done using the adminaccessconfig command and selecting IPACCESS from the menu. (…) The IronPort Spam Quarantine Denial of Service Vulnerability can be mitigated by disabling the end-user access to the ISQ service. Administrators can disable this access using the interfaceconfig command. Alternatively, this can be done via the GUI by editing the settings for Spam Quarantine under Monitor->Quarantines-> Edit and then unchecking the option "Enable End-User Quarantine Access".

The vulnerability is also documented in the databases at Tenable (69076), OSVDB (94609†), Secunia (SA53957†) and Vulnerability Center (SBV-40228†). Further details are available at seclists.org. The entries VDB-9274, VDB-9275 and VDB-9276 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Cisco

Name

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

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

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 69076
Nessus Name: Multiple Vulnerabilities in Cisco Email Security Appliance (cisco-sa-20130626-esa)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Web/Mail Security Appliance 7.1.5-016
Firewalling: 🔍

Timelineinfo

05/06/2013 🔍
06/26/2013 +51 days 🔍
06/26/2013 +0 days 🔍
06/26/2013 +0 days 🔍
06/27/2013 +1 days 🔍
06/27/2013 +0 days 🔍
06/30/2013 +3 days 🔍
05/17/2021 +2878 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20130626-esa
Status: Confirmed

CVE: CVE-2013-3385 (🔍)
GCVE (CVE): GCVE-0-2013-3385
GCVE (VulDB): GCVE-100-9279

IAVM: 🔍

Secunia: 53957 - Cisco Appliances Multiple Vulnerabilities, Less Critical
OSVDB: 94609
Vulnerability Center: 40228 - [cisco-sa-20130626-esa, cisco-sa-20130626-sma] Cisco IronPort AsyncOS Remote Denial of Service (CVE-2013-3385), High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 06/27/2013 11:52 AM
Updated: 05/17/2021 12:15 PM
Changes: 06/27/2013 11:52 AM (53), 05/04/2017 10:24 AM (27), 05/17/2021 12:15 PM (3)
Complete: 🔍
Cache ID: 18:B64:40

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