vulnerability
Oracle Linux: CVE-2020-14309: ELSA-2020-5786: grub2 security update (IMPORTANT) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:M/C:C/I:C/A:C) | Jul 29, 2020 | Jul 30, 2020 | Dec 1, 2024 |
Severity
6
CVSS
(AV:L/AC:L/Au:M/C:C/I:C/A:C)
Published
Jul 29, 2020
Added
Jul 30, 2020
Modified
Dec 1, 2024
Description
There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.
A flaw was found in grub2. When handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size, the name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2. When handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size, the name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Solution(s)
oracle-linux-upgrade-grub2oracle-linux-upgrade-grub2-efi-aa64oracle-linux-upgrade-grub2-efi-aa64-cdbootoracle-linux-upgrade-grub2-toolsoracle-linux-upgrade-grub2-tools-extraoracle-linux-upgrade-grub2-tools-minimal
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