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CVE-2020-29363

Published: 16 December 2020

An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
p11-kit
Launchpad, Ubuntu, Debian
bionic
Released (0.23.9-2ubuntu0.1)
focal
Released (0.23.20-1ubuntu0.1)
groovy
Released (0.23.21-2ubuntu0.1)
hirsute
Released (0.23.22-1)
trusty Not vulnerable
(code not present)
upstream
Released (0.23.22-1)
xenial Not vulnerable
(code not present)
Patches:
upstream: https://github.com/p11-glue/p11-kit/commit/2617f3ef888e103324a28811886b99ed0a56346d (0.23.22)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H