CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
CVE-2021-34406 (GCVE-0-2021-34406)
Vulnerability from cvelistv5 – Published: 2022-01-18 18:05 – Updated: 2024-08-04 00:12
VLAI
Summary
NVIDIA Tegra kernel driver contains a vulnerability in NVHost, where a specific race condition can lead to a null pointer dereference, which may lead to a system reboot.
Severity
4.7 (Medium)
CWE
- CWE-476 - - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://nvidia.custhelp.com/app/answers/detail/a_… | x_refsource_CONFIRM |
Impacted products
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CVE-2021-3443 (GCVE-0-2021-3443)
Vulnerability from cvelistv5 – Published: 2021-03-25 18:45 – Updated: 2024-08-03 16:53
VLAI
Summary
A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.27 handled component references in the JP2 image format decoder. A specially crafted JP2 image file could cause an application using the Jasper library to crash when opened.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1939233 | x_refsource_MISC |
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CVE-2021-34586 (GCVE-0-2021-34586)
Vulnerability from cvelistv5 – Published: 2021-10-26 09:55 – Updated: 2024-09-17 03:53
VLAI
Title
CODESYS V2 web server: crafted requests could trigger a null pointer dereference (DoS)
Summary
In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.
Severity
7.5 (High)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
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| https://www.tenable.com/security/research/tra-2021-47 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | CODESYS V2 |
Affected:
all web servers , < V1.1.9.22
(custom)
|
Date Public
2021-10-25 00:00
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CVE-2021-3463 (GCVE-0-2021-3463)
Vulnerability from cvelistv5 – Published: 2021-04-13 20:41 – Updated: 2024-08-03 16:53
VLAI
Summary
A null pointer dereference vulnerability in Lenovo Power Management Driver for Windows 10, prior to version 1.67.17.54, that could cause systems to experience a blue screen error.
Severity
4.2 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.lenovo.com/us/en/product_security… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Lenovo | Power Management Driver for Windows 10 |
Affected:
unspecified , < 1.67.17.54
(custom)
|
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CVE-2021-3467 (GCVE-0-2021-3467)
Vulnerability from cvelistv5 – Published: 2021-03-25 18:45 – Updated: 2024-08-03 16:53
VLAI
Summary
A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.26 handled component references in CDEF box in the JP2 image format decoder. A specially crafted JP2 image file could cause an application using the Jasper library to crash when opened.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1942097 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2021-34737 (GCVE-0-2021-34737)
Vulnerability from cvelistv5 – Published: 2021-09-09 05:01 – Updated: 2024-11-07 22:00
VLAI
Title
Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability
Summary
A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condition. This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device. An attacker could exploit this vulnerability by sending a malformed DHCPv4 message to an affected device. A successful exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the dhcpd process. While the dhcpd process is restarting, which may take up to approximately two minutes, DHCPv4 server services are unavailable on the affected device. This could temporarily prevent network access to clients that join the network during that time period. Note: Only the dhcpd process crashes and eventually restarts automatically. The router does not reload.
Severity
5.8 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XR Software |
Affected:
n/a
|
Date Public
2021-09-08 00:00
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CVE-2021-34798 (GCVE-0-2021-34798)
Vulnerability from cvelistv5 – Published: 2021-09-16 14:40 – Updated: 2024-08-04 00:26
VLAI
Title
NULL pointer dereference in httpd core
Summary
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
17 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Affected:
Apache HTTP Server 2.4 , ≤ 2.4.48
(custom)
|
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CVE-2021-3480 (GCVE-0-2021-3480)
Vulnerability from cvelistv5 – Published: 2021-05-20 12:14 – Updated: 2024-08-03 16:53
VLAI
Summary
A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing of the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The highest threat from this vulnerability is to system availability.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1944640 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2021-3514 (GCVE-0-2021-3514)
Vulnerability from cvelistv5 – Published: 2021-05-28 00:00 – Updated: 2024-08-03 16:53
VLAI
Summary
When using a sync_repl client in 389-ds-base, an authenticated attacker can cause a NULL pointer dereference using a specially crafted query, causing a crash.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | 389-ds-base |
Affected:
389-ds-base 1.4.3
|
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CVE-2021-3537 (GCVE-0-2021-3537)
Vulnerability from cvelistv5 – Published: 2021-05-14 19:50 – Updated: 2024-08-03 17:01
VLAI
Summary
A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.
Severity
No CVSS data available.
CWE
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1956522 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.gentoo.org/glsa/202107-05 | vendor-advisoryx_refsource_GENTOO |
| https://security.netapp.com/advisory/ntap-2021062… | x_refsource_CONFIRM |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpuapr2022.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujul2022.html | x_refsource_MISC |
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Mitigation ID: MIT-56
Phase: Implementation
Description:
- For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Phase: Requirements
Description:
- Select a programming language that is not susceptible to these issues.
Mitigation
Phase: Implementation
Description:
- Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Phase: Architecture and Design
Description:
- Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Phase: Implementation
Description:
- Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.