CVE-2020-15707
29.07.2020, 18:15
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
| Vendor | Product | Version |
|---|---|---|
| gnu | grub2 | 𝑥 ≤ 2.04 |
| redhat | enterprise_linux_atomic_host | - |
| redhat | openshift_container_platform | 4.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| microsoft | windows_10 | - |
| microsoft | windows_8.1 | - |
| microsoft | windows_rt_8.1 | - |
| microsoft | windows_server_2012 | - |
| microsoft | windows_server_2016 | - |
| microsoft | windows_server_2019 | - |
| canonical | ubuntu_linux | 14.04 |
| canonical | ubuntu_linux | 16.04 |
| canonical | ubuntu_linux | 18.04 |
| canonical | ubuntu_linux | 20.04 |
| debian | debian_linux | 10.0 |
| opensuse | leap | 15.1 |
| opensuse | leap | 15.2 |
| netapp | active_iq_unified_manager | 9.5 ≤ |
𝑥
= Vulnerable software versions
Debian Releases
Ubuntu Releases
Ubuntu Product | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| grub2 |
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| grub2-signed |
| ||||||||||||||||||||||
| grub2-unsigned |
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Common Weakness Enumeration
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
- CWE-190 - Integer Overflow or WraparoundThe software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
References