Telink Semiconductor BLE SDK Bluetooth Low Energy Crafted Packet buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Telink Semiconductor BLE SDK. The impacted element is an unknown function of the component Bluetooth Low Energy. The manipulation as part of Crafted Packet leads to buffer overflow. This vulnerability is uniquely identified as CVE-2019-19196. It is possible to launch the attack on the physical device. No exploit exists.

Detailsinfo

A vulnerability was found in Telink Semiconductor BLE SDK (affected version not known). It has been rated as critical. This issue affects some unknown functionality of the component Bluetooth Low Energy. The manipulation as part of a Crafted Packet leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on Telink Semiconductor BLE SDK versions before November 2019 for TLSR8x5x through 3.4.0, TLSR823x through 1.3.0, and TLSR826x through 3.3 devices accepts a pairing request with a key size greater than 16 bytes, allowing an attacker in radio range to cause a buffer overflow and denial of service (crash) via crafted packets.

The weakness was disclosed 02/12/2020. The identification of this vulnerability is CVE-2019-19196 since 11/21/2019. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

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

The entry VDB-150046 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

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

11/21/2019 🔍
02/12/2020 +83 days 🔍
02/13/2020 +1 days 🔍
03/30/2024 +1507 days 🔍

Sourcesinfo

Advisory: telink-semi.com
Status: Not defined

CVE: CVE-2019-19196 (🔍)
GCVE (CVE): GCVE-0-2019-19196
GCVE (VulDB): GCVE-100-150047
See also: 🔍

Entryinfo

Created: 02/13/2020 08:13
Updated: 03/30/2024 14:49
Changes: 02/13/2020 08:13 (36), 02/13/2020 08:18 (17), 03/30/2024 14:49 (17)
Complete: 🔍
Cache ID: 216::103

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