NotCVE-2024-0001
Linux ASLR Weakness: Improper Bit-Mask Manipulation Reducing mmap Entropy by Half
Severity Score
5.3
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A flaw in the Linux kernel's Address Space Layout Randomization (ASLR) implementation affects certain architectures, including PowerPC, Sparc64, and ARM. Due to improper bit-mask manipulation during the randomization of the mmap base address, the entropy is reduced by half, decreasing from 18 bits to 17 bits. This reduction significantly lowers the effectiveness of ASLR, making it easier for attackers to predict memory allocation and potentially exploit vulnerabilities that rely on memory address randomization.
*Credits:
https://hmarco.org
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2024-12-22 CVE Reserved
- 2025-01-03 CVE Published
- 2025-01-03 CVE Updated
- 2025-01-03 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-331: Insufficient Entropy
CAPEC
- CAPEC-97: Cryptanalysis
References (1)
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 2.6.38 Search vendor "Linux" for product "Linux Kernel" and version "2.6.38" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.2.0 Search vendor "Linux" for product "Linux Kernel" and version "3.2.0" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.18.0 Search vendor "Linux" for product "Linux Kernel" and version "3.18.0" | - |
Affected
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