Common Weakness Enumeration
CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9816 vulnerabilities reference this CWE, most recent first.
CVE-2021-39837 (GCVE-0-2021-39837)
Vulnerability from cvelistv5 – Published: 2021-09-29 15:37 – Updated: 2024-09-16 22:45
VLAI
EPSS
VEX
Title
Adobe Acrobat Reader DC AcroForm deleteItemAt Use-After-Free Remote Code Execution Vulnerability
Summary
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability in the processing of the AcroForm deleteItemAt action that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat Reader |
Affected:
unspecified , ≤ DC 2021 July
(custom)
Affected: unspecified , ≤ 20.0-Classic 2021 July (custom) Affected: unspecified , ≤ 17.0-Classic 2021 July (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2021-09-14 00:00
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CVE-2021-39836 (GCVE-0-2021-39836)
Vulnerability from cvelistv5 – Published: 2021-09-29 15:37 – Updated: 2024-09-16 17:22
VLAI
EPSS
VEX
Title
Adobe Acrobat Reader DC AcroForm buttonGetIcon Use-After-Free Remote Code Execution Vulnerability
Summary
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability in the processing of the AcroForm buttonGetIcon action that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat Reader |
Affected:
unspecified , ≤ DC 2021 July
(custom)
Affected: unspecified , ≤ 20.0-Classic 2021 July (custom) Affected: unspecified , ≤ 17.0-Classic 2021 July (custom) Affected: unspecified , ≤ None (custom) |
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2021-09-14 00:00
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CVE-2021-39835 (GCVE-0-2021-39835)
Vulnerability from cvelistv5 – Published: 2021-09-29 15:37 – Updated: 2025-04-23 19:25
VLAI
EPSS
VEX
Title
Adobe FrameMaker PDF File Parsing Use-After-Free Information Disclosure Vulnerability
Summary
Adobe Framemaker versions 2019 Update 8 (and earlier) and 2020 Release Update 2 (and earlier) are affected by a use-after-free vulnerability in the processing of a malformed PDF file that could result in disclosure of sensitive memory. Exploitation of this issue requires user interaction in that a victim must open a malicious PDF file.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/framema… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | FrameMaker |
Affected:
unspecified , ≤ 2020.2
(custom)
Affected: unspecified , ≤ 2019.8 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2021-09-14 00:00
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CVE-2021-39228 (GCVE-0-2021-39228)
Vulnerability from cvelistv5 – Published: 2021-09-17 14:00 – Updated: 2024-08-04 01:58
VLAI
EPSS
VEX
Title
Memory Safety Issue when using patch or merge on state and assign the result back to state
Summary
Tremor is an event processing system for unstructured data. A vulnerability exists between versions 0.7.2 and 0.11.6. This vulnerability is a memory safety Issue when using `patch` or `merge` on `state` and assign the result back to `state`. In this case, affected versions of Tremor and the tremor-script crate maintains references to memory that might have been freed already. And these memory regions can be accessed by retrieving the `state`, e.g. send it over TCP or HTTP. This requires the Tremor server (or any other program using tremor-script) to execute a tremor-script script that uses the mentioned language construct. The issue has been patched in version 0.11.6 by removing the optimization and always cloning the target expression of a Merge or Patch. If an upgrade is not possible, a possible workaround is to avoid the optimization by introducing a temporary variable and not immediately reassigning to `state`.
Severity
6.5 (Medium)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tremor-rs/tremor-runtime/secur… | x_refsource_CONFIRM |
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| https://github.com/tremor-rs/tremor-runtime/commi… | x_refsource_MISC |
| https://github.com/tremor-rs/tremor-runtime/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tremor-rs | tremor-runtime |
Affected:
> 0.7.2, < 0.11.6
|
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CVE-2021-39216 (GCVE-0-2021-39216)
Vulnerability from cvelistv5 – Published: 2021-09-17 20:05 – Updated: 2024-08-04 01:58
VLAI
EPSS
VEX
Title
Use after free passing `externref`s to Wasm in Wasmtime
Summary
Wasmtime is an open source runtime for WebAssembly & WASI. In Wasmtime from version 0.19.0 and before version 0.30.0 there was a use-after-free bug when passing `externref`s from the host to guest Wasm content. To trigger the bug, you have to explicitly pass multiple `externref`s from the host to a Wasm instance at the same time, either by passing multiple `externref`s as arguments from host code to a Wasm function, or returning multiple `externref`s to Wasm from a multi-value return function defined in the host. If you do not have host code that matches one of these shapes, then you are not impacted. If Wasmtime's `VMExternRefActivationsTable` became filled to capacity after passing the first `externref` in, then passing in the second `externref` could trigger a garbage collection. However the first `externref` is not rooted until we pass control to Wasm, and therefore could be reclaimed by the collector if nothing else was holding a reference to it or otherwise keeping it alive. Then, when control was passed to Wasm after the garbage collection, Wasm could use the first `externref`, which at this point has already been freed. We have reason to believe that the effective impact of this bug is relatively small because usage of `externref` is currently quite rare. The bug has been fixed, and users should upgrade to Wasmtime 0.30.0. If you cannot upgrade Wasmtime yet, you can avoid the bug by disabling reference types support in Wasmtime by passing `false` to `wasmtime::Config::wasm_reference_types`.
Severity
6.3 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | x_refsource_CONFIRM |
| https://github.com/bytecodealliance/wasmtime/comm… | x_refsource_MISC |
| https://crates.io/crates/wasmtime | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
>=0.19.0, <=0.29.0
|
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CVE-2021-38467 (GCVE-0-2021-38467)
Vulnerability from cvelistv5 – Published: 2021-10-22 11:23 – Updated: 2024-09-17 02:31
VLAI
EPSS
VEX
Title
AUVESY Versiondog
Summary
A specific function code receives a raw pointer supplied by the user and deallocates this pointer. The user can then control what memory regions will be freed and cause use-after-free condition.
Severity
7.3 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-292-01 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AUVESY | Versiondog |
Affected:
All , ≤ 8.0
(custom)
|
Date Public
2021-08-19 00:00
Credits
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CVE-2021-38438 (GCVE-0-2021-38438)
Vulnerability from cvelistv5 – Published: 2021-10-18 12:39 – Updated: 2024-09-16 20:58
VLAI
EPSS
VEX
Title
FATEK Automation WinProladder
Summary
A use after free vulnerability in FATEK Automation WinProladder versions 3.30 and prior may be exploited when a valid user opens a malformed project file, which may allow arbitrary code execution.
Severity
7.8 (High)
CWE
- CWE-416 - USE AFTER FREE CWE-416
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-280-06 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FATEK Automation | WinProladder |
Affected:
All , ≤ 3.30
(custom)
|
Date Public
2021-10-07 00:00
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CVE-2021-37690 (GCVE-0-2021-37690)
Vulnerability from cvelistv5 – Published: 2021-08-12 23:10 – Updated: 2024-08-04 01:23
VLAI
EPSS
VEX
Title
Use after free and segfault in shape inference functions in TensorFlow
Summary
TensorFlow is an end-to-end open source platform for machine learning. In affected versions when running shape functions, some functions (such as `MutableHashTableShape`) produce extra output information in the form of a `ShapeAndType` struct. The shapes embedded in this struct are owned by an inference context that is cleaned up almost immediately; if the upstream code attempts to access this shape information, it can trigger a segfault. `ShapeRefiner` is mitigating this for normal output shapes by cloning them (and thus putting the newly created shape under ownership of an inference context that will not die), but we were not doing the same for shapes and types. This commit fixes that by doing similar logic on output shapes and types. We have patched the issue in GitHub commit ee119d4a498979525046fba1c3dd3f13a039fbb1. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
Severity
6.6 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/e… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
>= 2.5.0, < 2.5.1
Affected: >= 2.4.0, < 2.4.3 Affected: < 2.3.4 |
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CVE-2021-37652 (GCVE-0-2021-37652)
Vulnerability from cvelistv5 – Published: 2021-08-12 21:15 – Updated: 2024-08-04 01:23
VLAI
EPSS
VEX
Title
Use after free in boosted trees creation in TensorFlow
Summary
TensorFlow is an end-to-end open source platform for machine learning. In affected versions the implementation for `tf.raw_ops.BoostedTreesCreateEnsemble` can result in a use after free error if an attacker supplies specially crafted arguments. The [implementation](https://github.com/tensorflow/tensorflow/blob/f24faa153ad31a4b51578f8181d3aaab77a1ddeb/tensorflow/core/kernels/boosted_trees/resource_ops.cc#L55) uses a reference counted resource and decrements the refcount if the initialization fails, as it should. However, when the code was written, the resource was represented as a naked pointer but later refactoring has changed it to be a smart pointer. Thus, when the pointer leaves the scope, a subsequent `free`-ing of the resource occurs, but this fails to take into account that the refcount has already reached 0, thus the resource has been already freed. During this double-free process, members of the resource object are accessed for cleanup but they are invalid as the entire resource has been freed. We have patched the issue in GitHub commit 5ecec9c6fbdbc6be03295685190a45e7eee726ab. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
| https://github.com/tensorflow/tensorflow/commit/5… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
>= 2.5.0, < 2.5.1
Affected: >= 2.4.0, < 2.4.3 Affected: < 2.3.4 |
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CVE-2021-37202 (GCVE-0-2021-37202)
Vulnerability from cvelistv5 – Published: 2021-09-14 10:47 – Updated: 2024-08-04 01:16
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in NX 1980 Series (All versions < V1984), Solid Edge SE2021 (All versions < SE2021MP8). The IFC adapter in affected application contains a use-after-free vulnerability that could be triggered while parsing user-supplied IFC files. An attacker could leverage this vulnerability to execute code in the context of the current process.
Severity
No CVSS data available.
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | NX 1980 Series |
Affected:
All versions < V1984
|
|
| Siemens | Solid Edge SE2021 |
Affected:
All versions < SE2021MP8
|
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Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.