GNU Grub
By the Year
In 2024 there have been 0 vulnerabilities in GNU Grub . Last year Grub had 1 security vulnerability published. Right now, Grub is on track to have less security vulnerabilities in 2024 than it did last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2024 | 0 | 0.00 |
| 2023 | 1 | 6.70 |
| 2022 | 3 | 5.33 |
| 2021 | 0 | 0.00 |
| 2020 | 0 | 0.00 |
| 2019 | 0 | 0.00 |
| 2018 | 0 | 0.00 |
It may take a day or so for new Grub vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent GNU Grub Security Vulnerabilities
An attacker with local access to a system (either through a disk or external drive)
CVE-2023-4949
6.7 - Medium
- November 10, 2023
An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grubs XFS file system implementation.
Memory Corruption
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap
CVE-2021-3697
7 - High
- July 06, 2022
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Memory Corruption
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader
CVE-2021-3696
4.5 - Medium
- July 06, 2022
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Memory Corruption
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area
CVE-2021-3695
4.5 - Medium
- July 06, 2022
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
Memory Corruption
A certain Debian patch for GNU GRUB uses world-readable permissions for grub.cfg, which
CVE-2013-4577
- May 12, 2014
A certain Debian patch for GNU GRUB uses world-readable permissions for grub.cfg, which allows local users to obtain password hashes, as demonstrated by reading the password_pbkdf2 directive in the file.
Permissions, Privileges, and Access Controls
