SB2019100137 - OpenSUSE Linux update for u-boot

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Main Vulnerability Database SB2019100137

SB2019100137 - OpenSUSE Linux update for u-boot

Published: October 1, 2019 Updated: December 20, 2022

Security Bulletin ID SB2019100137
Severity
Critical
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 50% High 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2019-13104)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy() to overwrite a very large amount of data (including the whole stack) while reading a crafted ext4 filesystem.


2) Stack-based buffer overflow (CVE-ID: CVE-2019-13106)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when the ext4 code can overwrite portions of the stack with 0s in the "ext4fs_read_file" function. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

This vulnerability can easily give complete control of the CPU, which would defeat verified boot



Remediation

Install update from vendor's website.

References