CVE-2021-26706
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.
Overview
- CVE ID
- CVE-2021-26706
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2022-01-24T01:15:07
- Last Modified Date
- 2022-02-17T15:43:38
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:micrium:uc\/lib:1.38.00:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:micrium:uc\/lib:1.38.01:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:micrium:uc\/lib:1.38.02:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:micrium:uc\/lib:1.38.03:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:micrium:uc\/lib:1.38.04:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:micrium:uc\/lib:1.38.05:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:micrium:uc\/lib:1.39.00:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://micrium.atlassian.net/wiki/spaces/libdoc138/ | Third Party Advisory |
| https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 | Third Party Advisory US Government Resource |
| https://docs.silabs.com/micrium/latest/micrium-common/ | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-26706 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26706 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:32:26 | Added to TrackCVE | |||
| 2022-12-06 07:29:33 | 2022-01-24T01:15Z | 2022-01-24T01:15:07 | CVE Published Date | updated |
| 2022-12-06 07:29:33 | 2022-02-17T15:43:38 | CVE Modified Date | updated | |
| 2022-12-06 07:29:33 | Analyzed | Vulnerability Status | updated |