CVE-2022-28736
There's a use-after-free vulnerability in grub_cmd_chainloader() function
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
A use-after-free vulnerability was found on grub2's chainloader command. This flaw allows an attacker to gain access to restricted data or cause arbitrary code execution if they can establish control from grub's memory allocation pattern.
*Credits:
Chris Coulson
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-04-05 CVE Reserved
- 2022-06-20 CVE Published
- 2023-08-26 EPSS Updated
- 2024-10-24 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28736 | Issue Tracking | |
| https://security.netapp.com/advisory/ntap-20230825-0002 |
|
|
| https://www.openwall.com/lists/oss-security/2022/06/07/5 | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-28736 | 2022-06-16 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2092613 | 2022-06-16 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Gnu Search vendor "Gnu" | Grub2 Search vendor "Gnu" for product "Grub2" | >= 2.00 < 2.06-3 Search vendor "Gnu" for product "Grub2" and version " >= 2.00 < 2.06-3" | - |
Affected
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