CVE-2021-0308

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.

The gdisk packages provide the gdisk partitioning utility for GUID Partition Table (GPT) disks. The utility features a command-line interface similar to fdisk, direct manipulation of partition table structures, recovery tools to deal with corrupt partition tables, and the ability to convert Master Boot Record (MBR) disks to the GPT format.

Security Fix(es):

• gdisk: possible out-of-bounds-write in LoadPartitionTable of gpt.cc (CVE-2020-0256)

• gdisk: possible out-of-bounds-write in ReadLogicalParts of basicmbr.cc (CVE-2021-0308)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.7 Release Notes linked from the References section.

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.

The gdisk packages provide the gdisk partitioning utility for GUID Partition Table (GPT) disks. The utility features a command-line interface similar to fdisk, direct manipulation of partition table structures, recovery tools to deal with corrupt partition tables, and the ability to convert Master Boot Record (MBR) disks to the GPT format.

Security Fix(es):

• gdisk: possible out-of-bounds-write in LoadPartitionTable of gpt.cc (CVE-2020-0256)
• gdisk: possible out-of-bounds-write in ReadLogicalParts of basicmbr.cc (CVE-2021-0308)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

A bug that could cause segfault if GPT header claimed partition entries are oversized (CVE-2020-0256).

A bug that could cause a crash if a badly-formatted MBR disk was read (CVE-2021-0308).

The gdisk package has been updated to version 1.0.6, fixing these issues and several other bugs. See the upstream NEWS file for details.

These are all security issues fixed in the gptfdisk-1.0.8-1.2 package on the GA media of openSUSE Tumbleweed.

The potential for an out of bounds write due to a missing bounds check was discovered to impact the sgdisk utility of GPT fdisk. Exploitation requires the use of a maliciously formatted storage device and could cause sgdisk to crash as well as possibly allow for local privilege escalation.