Weakness (CWE)
CWE-476: NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
How to prevent it (5 mitigations)
-
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].
-
Requirements
Select a programming language that is not susceptible to these issues.
-
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
-
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.
-
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
Source: MITRE CWE-476
2,663 results · Feed
-
High 7.5
Junos OS and Junos OS Evolved: In a scenario with VPN-flowspec and BMP monitoring a specific BGP update causes an rpd crash
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated remote BGP neighbor to cause a denial of service via a VPN-flowspec BGP update if it is readvertised and …
-
High 7.5
Junos OS and Junos OS Evolved: A specific BGP packet causes an rpd crash when an ECMP qualifier is used in an import policy
A NULL Pointer Dereference vulnerability in the routing-policy nexthop-ECMP matcher of Juniper Networks Junos OS and Junos OS Evolved allows a configured eBGP peer to cause a routing-daemon denial of service via a specific BGP packet received while a nexthop-…
-
Medium 6.5
Junos OS and Junos OS Evolved: MX Series, ACX Series: An attacker causes a routing daemon crash when multicast lawful intercept is used
A NULL Pointer Dereference vulnerability in the rpd process of Juniper Networks Junos OS on MX Series and Junos OS Evolved on ACX Series allows an unauthenticated adjacent attacker to cause a denial of service via an IGMPv3 membership report received on a dir…
-
Medium 6.5
Junos OS and Junos OS Evolved: An attacker crashes the routing daemon when co-routed bidirectional RSVP LSPs are used
A NULL Pointer Dereference vulnerability in the rpd routing daemon of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to crash the routing daemon and cause a denial of service via an RSVP Path message.
-
Medium 6.5
Junos OS and Junos OS Evolved: An attacker causes routing-process denial of service when GMPLS EVPL dynamic transport is used
A NULL Pointer Dereference vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service via a malformed RSVP Path message received on an EVPL LMP control channel.
-
High 7.5
Junos OS and Junos OS Evolved: An attacker causes routing-daemon denial of service when an MSDP or PIM policy uses AS-path expansion
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated configured MSDP peer or adjacent PIM sender to cause a denial of service via an MSDP or PIM policy that u…
-
High 7.5
Junos OS and Junos OS Evolved: An attacker causes an rpd crash when VPLS auto-discovery is used
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote BGP peer to cause a denial of service when multiple UPDATEs occur over a single TCP session with 'bgp family l2vpn …
-
Medium 6.5
Junos OS and Junos OS Evolved: Malformed RSVP packet causes rpd crash when MPLS-TE error processing is enabled
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent network attacker to cause a denial of service via a crafted RSVP packet when MPLS-TE RSVP processing is enabled.…
-
Medium 6.5
Junos OS and Junos OS Evolved: Malformed PIM Bidir DF-Election messages cause routing service disruption when bidirectional PIM is enabled
A NULL Pointer Dereference vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial-of-service condition via a malformed PIM Bidir message.
-
Medium 4.4
Junos OS and Junos OS Evolved: An attacker causes na-grpcd to crash when the InitialSync service is used
A NULL Pointer Dereference vulnerability in the na-grpcd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker with access to the chassis-internal network to cause a denial of service via a network message.
-
High 7.5
Junos OS and Junos OS Evolved: An attacker causes an rpd crash when routing-policy resolution-map processing and policy event tracing are enabled
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP neighbor to cause a denial of service via a BGP route update when specific routing-policy resolution-map an…
-
High 7.5
Junos OS and Junos OS Evolved: An attacker causes a routing-daemon crash when BGP ISO-VPN egress protection is enabled
A NULL Pointer Dereference vulnerability in the rpd routing daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated configured BGP peer to cause a denial of service via a BGP UPDATE when ISO-VPN and egress-protection configuration i…
-
High 7.5
Junos OS and Junos OS Evolved: A routing-policy table reference causes routing-daemon denial of service when source-based forwarding is used
A NULL Pointer Dereference vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a configured peer sending a BGP UPDATE to cause a denial of service when an import policy with `then source-based-forwarding…
-
Medium 6.5
Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker causes an rpd crash when LDP is enabled
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service via LDP messages received over an operational LDP session.
-
Medium 5.9
Junos OS: SRX Series: Multiple DNS queries processed by SecIntel and DGA in the same session cause a flowd crash
A NULL Pointer Dereference vulnerability in the DNS plugin of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS). When multiple DNS queries are received in a single flow sessio…
-
High 7.5
Junos OS and Junos OS Evolved: A specific BGP FlowSpec update causes an rpd crash when BGP FlowSpec import policy is used
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote unauthenticated BGP peer to cause a denial of service via a specific BGP FlowSpec update received by an affected BG…
-
High 7.5
Junos OS and Junos OS Evolved: A specific BGP packet causes an rpd crash when ephemeral configuration is used
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured eBGP peer to cause a persistent routing-daemon denial of service via a specific BGP packet when ephemeral confi…
-
High 7.5
Junos OS: Malformed packet causes pkid denial of service when certificate re-enrollment is used
A NULL Pointer Dereference vulnerability in the pkid component of Juniper Networks Junos OS allows an unauthenticated remote attacker to cause a denial of service via a malformed packet received during CMP enrollment or automatic certificate re-enrollment.
-
Medium 6.5
Nezha Monitoring: Whole-instance DoS in Nezha dashboard: a member can crash the process for every tenant
Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From 2.2.7 until 2.2.11, ServiceSentinel.worker in service/singleton/servicesentinel.go checked an owned service under servicesLock and later dereferenced pointer-…
-
Medium 5.5
ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry
ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA sec…
-
Medium 5.5
xlsxio through 0.2.37 NULL Pointer Dereference via Worksheet Relationship Without Id
xlsxio through 0.2.37 contains a NULL pointer dereference vulnerability in main_sheet_get_sheetfile_expat_callback_element_start() in lib/xlsxio_read.c that allows attackers to crash applications via crafted files. Attackers can supply a .xlsx file whose work…
-
High 7.5
Null Pointer Dereference in PKCS#7 bundle with no certificates
Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then ite…
-
High 7.5
IKEv2 pre-authentication Null Pointer Dereference in EAP code
Libreswan's IKEv2 state machine has a null pointer dereference bug in the EAP handling code for authentication. As a result of inconsistency within the IKEv2 state machine code, this bug can be triggered by any IKEv2 connection, even if EAP is not configured …
-
Medium 5.5
Substance3D - Designer | NULL Pointer Dereference (CWE-476)
Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation…
-
Medium 5.5
Substance3D - Designer | NULL Pointer Dereference (CWE-476)
Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation…
-
Medium 5.5
Substance3D - Designer | NULL Pointer Dereference (CWE-476)
Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation…
-
Medium 5.5
Substance3D - Designer | NULL Pointer Dereference (CWE-476)
Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation…
-
Medium 5.5
Photoshop Desktop | NULL Pointer Dereference (CWE-476)
Photoshop Desktop is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of t…
-
Medium 5.5
Photoshop Desktop | NULL Pointer Dereference (CWE-476)
Photoshop Desktop is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of t…
-
Medium 5.5
Substance3D - Stager | NULL Pointer Dereference (CWE-476)
Substance3D - Stager is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation o…
-
Medium 5.5
Dimension | NULL Pointer Dereference (CWE-476)
Dimension is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issu…
-
High 7.8
Windows Universal Disk Format File System Driver (UDFS) Remote Code Execution Vulnerability
Null pointer dereference in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to execute code locally.
-
High 7.0
Windows MIDI Service Module Elevation of Privileges Vulnerability
Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
-
High 7.0
Windows Installer Elevation of Privilege Vulnerability
Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges locally.
-
High 7.5
Windows DHCP Server Denial of Service Vulnerability
Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
-
Medium 6.5
Windows Hyper-V Denial of Service Vulnerability
Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally.
-
High 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
-
Medium 6.5
Windows Message Queuing Queue Manager Denial of Service Vulnerability
Null pointer dereference in Windows Message Queuing Queue Manager allows an authorized attacker to deny service over a network.
-
High 7.5
Windows Routing and Remote Access Service (RRAS) Denial of Service Vulnerability
Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.
-
Medium 6.5
Windows Hyper-V Denial of Service Vulnerability
Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally.