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CVE-2020-8432

Publication date 29 January 2020

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double freeing may result in a write-what-where condition, allowing an attacker to execute arbitrary code. NOTE: this vulnerablity was introduced when attempting to fix a memory leak identified by static analysis.

Read the notes from the security team

Status

Package Ubuntu Release Status
u-boot 22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Fixed 2021.01+dfsg-3ubuntu0~20.04.3
19.10 eoan Ignored end of life
18.04 LTS bionic
Fixed 2020.10+dfsg-1ubuntu0~18.04.2
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release

Notes

mdeslaur

per thread, introduced by: https://gitlab.denx.de/u-boot/u-boot/commit/18030d04

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
u-boot

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H