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4 vulnerabilities found for Fuchsia by Google LLC
CVE-2022-0247 (GCVE-0-2022-0247)
Vulnerability from nvd – Published: 2022-02-25 11:10 – Updated: 2025-04-21 13:56
VLAI
Title
Write access to VMO data through copy-on-write in Fuchsia
Summary
An issue exists in Fuchsia where VMO data can be modified through access to copy-on-write snapshots. A local attacker could modify objects in the VMO that they do not have permission to. We recommend upgrading past commit d97c05d2301799ed585620a9c5c739d36e7b5d3d or any of the listed versions.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://fuchsia.googlesource.com/fuchsia/+/d97c05… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Google LLC | Fuchsia |
Affected:
unspecified , < 4.1
(custom)
|
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CVE-2021-22566 (GCVE-0-2021-22566)
Vulnerability from nvd – Published: 2022-01-18 14:10 – Updated: 2024-08-03 18:44
VLAI
Title
Incorrect mapping of Executable bits in Fuchsia Kernel
Summary
An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-275 - Permission Issues
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://fuchsia.googlesource.com/fuchsia/+/7d731b… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Google LLC | Fuchsia |
Affected:
0 , < 7d731b4e9599088ac3073956933559da7bca6a00
(git)
|
|
| fuchsia |
Affected:
0
cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:* |
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CVE-2022-0247 (GCVE-0-2022-0247)
Vulnerability from cvelistv5 – Published: 2022-02-25 11:10 – Updated: 2025-04-21 13:56
VLAI
Title
Write access to VMO data through copy-on-write in Fuchsia
Summary
An issue exists in Fuchsia where VMO data can be modified through access to copy-on-write snapshots. A local attacker could modify objects in the VMO that they do not have permission to. We recommend upgrading past commit d97c05d2301799ed585620a9c5c739d36e7b5d3d or any of the listed versions.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://fuchsia.googlesource.com/fuchsia/+/d97c05… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Google LLC | Fuchsia |
Affected:
unspecified , < 4.1
(custom)
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CVE-2021-22566 (GCVE-0-2021-22566)
Vulnerability from cvelistv5 – Published: 2022-01-18 14:10 – Updated: 2024-08-03 18:44
VLAI
Title
Incorrect mapping of Executable bits in Fuchsia Kernel
Summary
An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-275 - Permission Issues
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://fuchsia.googlesource.com/fuchsia/+/7d731b… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Google LLC | Fuchsia |
Affected:
0 , < 7d731b4e9599088ac3073956933559da7bca6a00
(git)
|
|
| fuchsia |
Affected:
0
cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:* |
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