CVE-2020-15706
6.4
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Exploitability: 0.5 / Impact: 5.9
Source: NVD
Description
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
Affected (33)
Show all products
Gnu: Grub2 · Canonical: Ubuntu Linux · Debian: Debian Linux · Redhat: Enterprise Linux, Enterprise Linux Atomic Host, Openshift Container Platform · Suse: Suse Linux Enterprise Server · Microsoft: Windows 10, Windows 8.1, Windows Rt 8.1, Windows Server 2012, Windows Server 2016, Windows Server 2019 · Opensuse: Leap
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| Version 16.04 | |
| Version 10.0 | |
| Version 7.0 | |
| All versions | |
| Version 4.0 | |
| Version 11 |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| All versions | |
| All versions | |
| All versions | |
| All versions | |
| All versions | |
| All versions |
Configuration E
| Vulnerable Software | Affected Versions |
|---|---|
| Version 14.04 |
Related CWEs
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product 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-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
References (34)
Source: security@ubuntu.com
Broken LinkMailing ListThird Party Advisory
Source: security@ubuntu.com
Broken LinkMailing ListThird Party Advisory
Source: security@ubuntu.com
Mailing ListThird Party Advisory
Source: security@ubuntu.com
Third Party Advisory
Source: security@ubuntu.com
Issue TrackingVendor Advisory
Source: security@ubuntu.com
PatchThird Party AdvisoryVendor Advisory
Source: security@ubuntu.com
Third Party Advisory
Source: security@ubuntu.com
Third Party Advisory
Source: security@ubuntu.com
Third Party Advisory
Source: security@ubuntu.com
Third Party Advisory
Source: security@ubuntu.com
Mailing ListThird Party Advisory
Source: security@ubuntu.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken LinkMailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken LinkMailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party AdvisoryVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Timeline
No history available yet.