Broadcom HardMAC SoC 6.37.34.40 CCKM Fast/Secure Roaming memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
7.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Broadcom HardMAC SoC 6.37.34.40. This issue affects some unknown processing of the component CCKM Fast/Secure Roaming. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2017-6957. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in Broadcom HardMAC SoC 6.37.34.40 and classified as critical. This vulnerability affects an unknown part of the component CCKM Fast/Secure Roaming. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in the firmware in Broadcom Wi-Fi HardMAC SoC chips, when the firmware supports CCKM Fast and Secure Roaming and the feature is enabled in RAM, allows remote attackers to execute arbitrary code via a crafted reassociation response frame with a Cisco IE (156).

The bug was discovered 03/17/2017. The weakness was shared 03/27/2017 by laginimaineb (Website). The advisory is shared for download at packetstormsecurity.com. This vulnerability was named CVE-2017-6957 since 03/17/2017. 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 vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 97054†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
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: Memory corruption
CWE: CWE-119
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: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/17/2017 🔍
03/17/2017 +0 days 🔍
03/23/2017 +6 days 🔍
03/27/2017 +4 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
11/22/2022 +2065 days 🔍

Sourcesinfo

Advisory: 141803
Researcher: laginimaineb
Status: Not defined

CVE: CVE-2017-6957 (🔍)
GCVE (CVE): GCVE-0-2017-6957
GCVE (VulDB): GCVE-100-99004
SecurityFocus: 97054 - Broadcom BCM4339 SoC CVE-2017-6957 Stack-Based Buffer Overflow Vulnerability
OSVDB: - CVE-2017-6957 - Broadcom Wi-Fi HardMAC SoC Chips - Buffer Overflow Issue

Entryinfo

Created: 03/28/2017 22:30
Updated: 11/22/2022 19:04
Changes: 03/28/2017 22:30 (62), 08/23/2020 14:30 (2), 11/22/2022 19:04 (4)
Complete: 🔍
Cache ID: 216:39E:103

Once again VulDB remains the best source for vulnerability data.

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