mbed TLS up to 2.28.1/3.2.x DTLS heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability was found in mbed TLS up to 2.28.1/3.2.x. It has been classified as critical. Impacted is an unknown function of the component DTLS. Performing a manipulation results in heap-based overflow. This vulnerability was named CVE-2022-46393. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in mbed TLS up to 2.28.1/3.2.x. This affects an unknown code block of the component DTLS. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.

The weakness was presented 12/16/2022. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-46393 since 12/04/2022. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.28.2 or 3.3.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: mbed TLS 2.28.2/3.3.0

Timelineinfo

12/04/2022 🔍
12/16/2022 +12 days 🔍
12/16/2022 +0 days 🔍
06/06/2026 +1267 days 🔍

Sourcesinfo

Advisory: FEDORA-2023-7456a62f60
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-46393 (🔍)
GCVE (CVE): GCVE-0-2022-46393
GCVE (VulDB): GCVE-100-215913

Entryinfo

Created: 12/16/2022 07:56
Updated: 06/06/2026 00:54
Changes: 12/16/2022 07:56 (41), 01/13/2023 08:57 (1), 01/13/2023 09:02 (11), 06/06/2026 00:54 (27)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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