Webroot BrightCloud SDK Header bc_http_read_header HTTP Header memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Webroot BrightCloud SDK and classified as critical. This affects the function bc_http_read_header of the component Header Handler. Performing a manipulation as part of HTTP Header results in memory corruption. This vulnerability is identified as CVE-2018-4012. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Webroot BrightCloud SDK (Cloud Software) (the affected version unknown). This affects the function bc_http_read_header of the component Header Handler. The manipulation as part of a HTTP Header leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bc_http_read_header incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightCloud server to trigger this vulnerability.

The bug was discovered 12/17/2018. The weakness was released 01/03/2019 (Website). It is possible to read the advisory at talosintelligence.com. This vulnerability is uniquely identified as CVE-2018-4012 since 01/02/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 17 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 9.0
CNA Vector (Talos): 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/02/2018 🔍
12/17/2018 +349 days 🔍
01/03/2019 +17 days 🔍
01/03/2019 +0 days 🔍
01/04/2019 +1 days 🔍
06/23/2023 +1631 days 🔍

Sourcesinfo

Advisory: talosintelligence.com
Status: Not defined

CVE: CVE-2018-4012 (🔍)
GCVE (CVE): GCVE-0-2018-4012
GCVE (VulDB): GCVE-100-128691

Entryinfo

Created: 01/04/2019 12:35
Updated: 06/23/2023 08:19
Changes: 01/04/2019 12:35 (58), 04/26/2020 09:52 (1), 06/23/2023 08:19 (14)
Complete: 🔍
Cache ID: 216::103

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