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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9821 vulnerabilities reference this CWE, most recent first.
CVE-2021-0270 (GCVE-0-2021-0270)
Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-16 19:04
VLAI
EPSS
VEX
Title
Junos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inline-Jflow" feature enabled on a large-scale deployment
Summary
On PTX Series and QFX10k Series devices with the "inline-jflow" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel architecture of Juniper Networks Junos OS may allow an attacker to cause a Denial of Service (DoS) condition whereby one or more Flexible PIC Concentrators (FPCs) may restart. As this is a race condition situation this issue become more likely to be hit when network instability occurs, such as but not limited to BGP/IGP reconvergences, and/or further likely to occur when more active "traffic flows" are occurring through the device. When this issue occurs, it will cause one or more FPCs to restart unexpectedly. During FPC restarts core files will be generated. While the core file is generated traffic will be disrupted. Sustained receipt of large traffic flows and reconvergence-like situations may sustain the Denial of Service (DoS) situation. This issue affects: Juniper Networks Junos OS: 18.1 version 18.1R2 and later versions prior to 18.1R3-S10 on PTX Series, QFX10K Series.
Severity
7.5 (High)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA11161 | x_refsource_MISC |
| https://www.juniper.net/documentation/en_US/junos… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
18.1R2 , < 18.1*
(custom)
|
Date Public
2021-04-14 00:00
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CVE-2021-0262 (GCVE-0-2021-0262)
Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-17 00:51
VLAI
EPSS
VEX
Title
Junos OS: QFX10002-60C: Use after free vulnerability found during static code analysis
Summary
Through routine static code analysis of the Juniper Networks Junos OS software codebase, the Secure Development Life Cycle team identified a Use After Free vulnerability in PFE packet processing on the QFX10002-60C switching platform. Exploitation of this vulnerability may allow a logically adjacent attacker to trigger a Denial of Service (DoS). Continued exploitation of this vulnerability will sustain the Denial of Service (DoS) condition. This issue only affects QFX10002-60C devices. No other product or platform is vulnerable to this issue. This issue affects Juniper Networks Junos OS on QFX10002-60C: 19.1 version 19.1R3-S1 and later versions; 19.1 versions prior to 19.1R3-S3; 19.2 version 19.2R2 and later versions; 19.2 versions prior to 19.2R3-S1; 20.2 versions prior to 20.2R1-S2. This issue does not affect Juniper Networks Junos OS: versions prior to 19.1R3; 19.2 versions prior to 19.2R2; any version of 19.3; version 20.2R2 and later releases.
Severity
6.5 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA11153 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Unaffected:
unspecified , < 19.1R3
(custom)
Unaffected: 19.3 Unaffected: 20.2R2 , < unspecified (custom) Affected: 19.1R3-S1 , < 19.1* (custom) Unaffected: 19.2 , < 19.2R2 (custom) Affected: 20.2 , < 20.2R1-S2 (custom) |
Date Public
2021-04-14 00:00
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CVE-2020-36329 (GCVE-0-2020-36329)
Vulnerability from cvelistv5 – Published: 2021-05-21 16:15 – Updated: 2024-08-04 17:23
VLAI
EPSS
VEX
Summary
A flaw was found in libwebp in versions before 1.0.1. A use-after-free was found due to a thread being killed too early. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
No CVSS data available.
CWE
Assigner
References
7 references
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|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1956843 | x_refsource_MISC |
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| https://www.debian.org/security/2021/dsa-4930 | vendor-advisoryx_refsource_DEBIAN |
| https://support.apple.com/kb/HT212601 | x_refsource_CONFIRM |
| http://seclists.org/fulldisclosure/2021/Jul/54 | mailing-listx_refsource_FULLDISC |
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CVE-2020-35506 (GCVE-0-2020-35506)
Vulnerability from cvelistv5 – Published: 2021-05-28 10:20 – Updated: 2024-08-04 17:02
VLAI
EPSS
VEX
Summary
A use-after-free vulnerability was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0 during the handling of the 'Information Transfer' command (CMD_TI). This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service or potential code execution with the privileges of the QEMU process.
Severity
No CVSS data available.
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/04/16/3 | mailing-listx_refsource_MLIST |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=1909996 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021071… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202208-27 | vendor-advisoryx_refsource_GENTOO |
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CVE-2020-28594 (GCVE-0-2020-28594)
Vulnerability from cvelistv5 – Published: 2021-08-17 19:15 – Updated: 2024-08-04 16:40
VLAI
EPSS
VEX
Summary
A use-after-free vulnerability exists in the _3MF_Importer::_handle_end_model() functionality of Prusa Research PrusaSlicer 2.2.0 and Master (commit 4b040b856). A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Prusa Research |
Affected:
Prusa Research PrusaSlicer 2.2.0 , Prusa Research PrusaSlicer Master (commit 4b040b856)
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CVE-2020-27835 (GCVE-0-2020-27835)
Vulnerability from cvelistv5 – Published: 2021-01-07 17:24 – Updated: 2024-08-04 16:25
VLAI
EPSS
VEX
Summary
A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1901709 | x_refsource_MISC |
Impacted products
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CVE-2020-27820 (GCVE-0-2020-27820)
Vulnerability from cvelistv5 – Published: 2021-11-02 23:26 – Updated: 2024-08-04 16:25
VLAI
EPSS
VEX
Summary
A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).
Severity
No CVSS data available.
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1901726 | x_refsource_MISC |
| https://lore.kernel.org/dri-devel/20201103194912.… | x_refsource_MISC |
| https://lore.kernel.org/dri-devel/20201103194912.… | x_refsource_MISC |
| https://lore.kernel.org/dri-devel/20201103194912.… | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujul2022.html | x_refsource_MISC |
Impacted products
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CVE-2020-27786 (GCVE-0-2020-27786)
Vulnerability from cvelistv5 – Published: 2020-12-11 04:05 – Updated: 2024-08-04 16:25
VLAI
EPSS
VEX
Summary
A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Severity
No CVSS data available.
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2020/12/03/1 | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1900933 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021012… | x_refsource_CONFIRM |
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CVE-2020-27280 (GCVE-0-2020-27280)
Vulnerability from cvelistv5 – Published: 2021-01-26 12:51 – Updated: 2024-08-04 16:11
VLAI
EPSS
VEX
Summary
A use after free issue has been identified in the way ISPSoft(v3.12 and prior) processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution.
Severity
No CVSS data available.
CWE
- CWE-416 - USE AFTER FREE CWE-416
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-021-01 | x_refsource_MISC |
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CVE-2020-27267 (GCVE-0-2020-27267)
Vulnerability from cvelistv5 – Published: 2021-01-13 23:25 – Updated: 2024-08-04 16:11
VLAI
EPSS
VEX
Summary
KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions), OPC-Aggregator (all versions), Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server v7.68.804 and v7.66, and Software Toolbox TOP Server all 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.
Severity
No CVSS data available.
CWE
- CWE-416 - USE AFTER FREE CWE-416
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02 | x_refsource_MISC |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | PTC Kepware KEPServerEX |
Affected:
v6.0 to v6.9
|
|
| n/a | ThingWorx Kepware Server |
Affected:
v6.8 and v6.9
|
|
| n/a | ThingWorx Industrial Connectivity |
Affected:
All versions
|
|
| n/a | OPC-Aggregator |
Affected:
All versions
|
|
| n/a | Rockwell Automation KEPServer Enterprise |
Affected:
All versions
|
|
| n/a | GE Digital Industrial Gateway Server |
Affected:
v7.68.804
Affected: v7.66 |
|
| n/a | Software Toolbox TOP Server |
Affected:
All 6.x versions
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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.