Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6310 vulnerabilities reference this CWE, most recent first.
CVE-2019-5010 (GCVE-0-2019-5010)
Vulnerability from cvelistv5 – Published: 2019-10-31 20:05 – Updated: 2024-08-04 19:40
VLAI
EPSS
VEX
Summary
An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.
Severity
5.9 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2019:3520 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:3725 | vendor-advisoryx_refsource_REDHAT |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://security.gentoo.org/glsa/202003-26 | vendor-advisoryx_refsource_GENTOO |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r1b103833cb5… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
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CVE-2019-3995 (GCVE-0-2019-3995)
Vulnerability from cvelistv5 – Published: 2019-12-17 21:59 – Updated: 2024-08-04 19:26
VLAI
EPSS
VEX
Summary
ELOG 3.1.4-57bea22 and below is affected by a denial of service vulnerability due to a NULL pointer dereference. A remote unauthenticated attacker can crash the ELOG server by sending a crafted HTTP GET request.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.tenable.com/security/research/tra-2019-53 | 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 |
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CVE-2019-3840 (GCVE-0-2019-3840)
Vulnerability from cvelistv5 – Published: 2019-03-27 12:24 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.
Severity
5.8 (Medium)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=1663051 | x_refsource_CONFIRM |
| https://www.redhat.com/archives/libvir-list/2019-… | x_refsource_CONFIRM |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:2294 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The libvirt Project | libvirt |
Affected:
5.0.0
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CVE-2019-1922 (GCVE-0-2019-1922)
Vulnerability from cvelistv5 – Published: 2019-07-06 01:25 – Updated: 2024-11-21 19:19
VLAI
EPSS
VEX
Title
Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service Vulnerability
Summary
A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
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 IP Phone 8800 Series Software |
Affected:
unspecified , < 12.0(1)MN130
(custom)
|
Date Public
2019-07-03 00:00
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CVE-2019-1900 (GCVE-0-2019-1900)
Vulnerability from cvelistv5 – Published: 2019-08-21 18:20 – Updated: 2024-11-19 19:00
VLAI
EPSS
VEX
Title
Cisco Integrated Management Controller Unauthenticated Denial of Service Vulnerability
Summary
A vulnerability in the web server of Cisco Integrated Management Controller (IMC) could allow an unauthenticated, remote attacker to cause the web server process to crash, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient validation of user-supplied input on the web interface. An attacker could exploit this vulnerability by submitting a crafted HTTP request to certain endpoints of the affected software. A successful exploit could allow an attacker to cause the web server to crash. Physical access to the device may be required for a restart.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
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 Unified Computing System (Management Software) |
Affected:
unspecified , < 4.0(2f)
(custom)
|
Date Public
2019-08-21 00:00
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CVE-2018-16871 (GCVE-0-2018-16871)
Vulnerability from cvelistv5 – Published: 2019-07-30 16:19 – Updated: 2024-08-05 10:32
VLAI
EPSS
VEX
Summary
A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.
Severity
7.5 (High)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2019:2696 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:2730 | vendor-advisoryx_refsource_REDHAT |
| https://support.f5.com/csp/article/K18657134 | x_refsource_CONFIRM |
| https://support.f5.com/csp/article/K18657134?utm_… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2020:0740 | vendor-advisoryx_refsource_REDHAT |
| https://security.netapp.com/advisory/ntap-2021100… | x_refsource_CONFIRM |
Impacted products
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CVE-2018-16852 (GCVE-0-2018-16852)
Vulnerability from cvelistv5 – Published: 2018-11-28 14:00 – Updated: 2024-08-05 10:32
VLAI
EPSS
VEX
Summary
Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.
Severity
6.5 (Medium)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.samba.org/samba/security/CVE-2018-168… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2018112… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/106024 | vdb-entryx_refsource_BID |
| https://security.gentoo.org/glsa/202003-52 | vendor-advisoryx_refsource_GENTOO |
Date Public
2018-11-27 00:00
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CVE-2018-16851 (GCVE-0-2018-16851)
Vulnerability from cvelistv5 – Published: 2018-11-28 14:00 – Updated: 2024-08-05 10:32
VLAI
EPSS
VEX
Summary
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
Severity
6.5 (Medium)
CWE
Assigner
References
9 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/106027 | vdb-entryx_refsource_BID |
| https://usn.ubuntu.com/3827-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/3827-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://security.netapp.com/advisory/ntap-2018112… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://www.debian.org/security/2018/dsa-4345 | vendor-advisoryx_refsource_DEBIAN |
| https://www.samba.org/samba/security/CVE-2018-168… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202003-52 | vendor-advisoryx_refsource_GENTOO |
Impacted products
Date Public
2018-11-27 00:00
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CVE-2018-14646 (GCVE-0-2018-14646)
Vulnerability from cvelistv5 – Published: 2018-11-26 19:00 – Updated: 2024-08-05 09:38
VLAI
EPSS
VEX
Summary
The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.
Severity
5.5 (Medium)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:3843 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2018:3666 | vendor-advisoryx_refsource_REDHAT |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2018:3651 | vendor-advisoryx_refsource_REDHAT |
| https://marc.info/?l=linux-netdev&m=151500466401174&w=2 | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
Date Public
2018-11-26 00:00
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CVE-2018-12469 (GCVE-0-2018-12469)
Vulnerability from cvelistv5 – Published: 2018-10-12 13:00 – Updated: 2024-09-16 19:46
VLAI
EPSS
VEX
Summary
Incorrect handling of an invalid value for an HTTP request parameter by Directory Server (aka Enterprise Server Administration web UI) in Micro Focus Enterprise Developer and Enterprise Server 2.3 Update 2 and earlier, 3.0 before Patch Update 12, and 4.0 before Patch Update 2 causes a null pointer dereference (CWE-476) and subsequent denial of service due to process termination.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://community.microfocus.com/microfocus/mainf… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Micro Focus | Micro Focus Enterprise Developer, Micro Focus Enterprise Server |
Affected:
All versions before 3.0 Patch Update 12, 4.0 Patch Update 2, 5.0
|
Date Public
2018-10-04 00:00
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Mitigation MIT-56
Implementation
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
Requirements
Select a programming language that is not susceptible to these issues.
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Architecture and Design
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
Implementation
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.