Cisco ASA 9.1(5.21) TLS MAC Field cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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4.8$5k-$25k0.00

A vulnerability has been found in Cisco ASA 9.1(5.21) (Firewall Software) and classified as critical. This vulnerability affects an unknown code of the component TLS Handler. The manipulation as part of a MAC Field leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

The TLS implementation in the Cavium cryptographic-module firmware, as distributed with Cisco Adaptive Security Appliance (ASA) Software 9.1(5.21) and other products, does not verify the MAC field, which allows man-in-the-middle attackers to spoof TLS content by modifying packets, aka Bug ID CSCuu52976.

The weakness was presented 07/18/2015 with Cisco as CSCuu52976 as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability was named CVE-2015-4458 since 06/10/2015. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 11/24/2024). This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 38612 (TLS Message Authentication Code Checking Vulnerability (MACE)).

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 75918†) and Vulnerability Center (SBV-51404†).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.8
VulDB Temp Score: 4.8
VulDB Vector: 🔍
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
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ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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OpenVAS ID: 800316
OpenVAS Name: Cisco ASA Unauthorized Modification Vulnerability
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
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Timelineinfo

06/10/2015 🔍
07/14/2015 +34 days 🔍
07/18/2015 +4 days 🔍
07/18/2015 +0 days 🔍
07/18/2015 +0 days 🔍
07/19/2015 +1 days 🔍
07/19/2015 +0 days 🔍
11/24/2024 +3416 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuu52976
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-4458 (🔍)
SecurityFocus: 75918 - Cisco Adaptive Security Appliance CVE-2015-4458 Security Bypass Vulnerability
SecurityTracker: 1032927
Vulnerability Center: 51404 - Cisco Adaptive Security Appliance (ASA) Software 9.1(5.21) Remote Spoofing due to Improper MAC field Verification, Medium

Entryinfo

Created: 07/19/2015 10:23 AM
Updated: 11/24/2024 09:56 AM
Changes: 07/19/2015 10:23 AM (59), 07/13/2017 10:45 AM (8), 06/03/2022 11:37 AM (3), 11/24/2024 09:56 AM (16)
Complete: 🔍
Cache ID: 18:67C:40

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