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CVE-2021-43400

Date: November 3, 2021

An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.

Language: C

Severity Score

Related Resources (6)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-43400
https://nvd.nist.gov/vuln/detail/CVE-2021-43400
https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html
https://security-tracker.debian.org/tracker/CVE-2021-43400
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=838c0dc7641e1c991c0f3027bf94bee4606012f8
https://www.mend.io/vulnerability-database/CVE-2021-43400

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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