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)
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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].
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Requirements
Select a programming language that is not susceptible to these issues.
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Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
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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.
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Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
Source: MITRE CWE-476
747 results · Clear filters · Feed
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High 8.4
Null pointer dereference and heap OOB read in TensorFlow
TensorFlow is an end-to-end open source platform for machine learning. When restoring tensors via raw APIs, if the tensor name is not provided, TensorFlow can be tricked into dereferencing a null pointer. Alternatively, attackers can read memory outside the b…
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High 7.7
Null pointer dereference in `RaggedTensorToTensor` in TensorFlow
TensorFlow is an end-to-end open source platform for machine learning. Sending invalid argument for `row_partition_types` of `tf.raw_ops.RaggedTensorToTensor` API results in a null pointer dereference and undefined behavior. The [implementation](https://githu…
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High 7.5
In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_R…
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High 7.5
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.2…
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High 7.5
SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT,…
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High 7.5
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.2…
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High 7.5
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.2…
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High 7.5
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
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High 8.6
Junos OS: MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC: The BRAS Subscriber Services service activation portal is vulnerable to a Denial of Service (DoS) via malformed HTTP packets
A NULL Pointer Dereference vulnerability in the Captive Portal Content Delivery (CPCD) services daemon (cpcd) of Juniper Networks Junos OS on MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC allows an attacker to send malformed HTTP packets to the device ther…
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High 7.5
Null pointer deference in fltk
An issue was discovered in the fltk crate before 0.15.3 for Rust. There is a NULL pointer dereference during attempted use of a multi label type if the image is nonexistent.
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High 8.6
A denial-of-service vulnerability exists in the HTTP Server functionality of Micrium uC-HTTP 3.01.00. A specially craft…
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High 7.5
A denial-of-service vulnerability exists in the WS-Addressing plugin functionality of Genivia gSOAP 2.8.107. A speciall…
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High 7.5
A denial-of-service vulnerability exists in the WS-Security plugin functionality of Genivia gSOAP 2.8.107. A specially …
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High 7.5
A denial-of-service vulnerability exists in the WS-Security plugin functionality of Genivia gSOAP 2.8.107. A specially …
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High 7.5
A denial-of-service vulnerability exists in the WS-Security plugin functionality of Genivia gSOAP 2.8.107. A specially …
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High 7.5
Null pointer deference in cache
An issue was discovered in the cache crate through 2021-01-01 for Rust. A raw pointer is dereferenced.
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High 7.5
Null pointer deference in av-data
An issue was discovered in the av-data crate before 0.3.0 for Rust. A raw pointer is dereferenced, leading to a read of an arbitrary memory address, sometimes causing a segfault.
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High 7.5
Junos OS: NFX Series, SRX Series: PFE may crash upon receipt of specific packet when SSL Proxy is configured.
A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS allows an attacker to send a specific packet causing the packet forwarding engine (PFE) to crash and restart, resulting in a Denial of Service (DoS). By continuously sending these specific …
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High 7.5
A NULL pointer deference vulnerability has been identified in the protocol converter. An attacker could send a speciall…
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High 7.5
golang.org/x/crypto/ssh NULL Pointer Dereference vulnerability
A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SSH servers.
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High 7.5
Nil dereference in NATS JWT, DoS of nats-server
The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a nil dereference in Go code).
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High 8.8
Junos OS: When a DHCPv6 Relay-Agent is configured upon receipt of a specific DHCPv6 client message, Remote Code Execution may occur.
The DHCPv6 Relay-Agent service, part of the Juniper Enhanced jdhcpd daemon shipped with Juniper Networks Junos OS has an Improper Input Validation vulnerability which will result in a Denial of Service (DoS) condition when a DHCPv6 client sends a specific DHP…
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High 7.0
Exploitable NULL pointer deref could lead to arbitrary code execution
Adobe Flash Player version 32.0.0.433 (and earlier) are affected by an exploitable NULL pointer dereference vulnerability that could result in a crash and arbitrary code execution. Exploitation of this issue requires an attacker to insert malicious strings in…
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High 8.6
Cisco IOS XE Software RESTCONF and NETCONF-YANG Access Control List Denial of Service Vulnerability
A vulnerability in the RESTCONF and NETCONF-YANG access control list (ACL) function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of the ACL that is tie…
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High 7.4
Cisco Aironet Access Points Ethernet Wired Clients Denial of Service Vulnerability
A vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input …
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High 8.6
Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability
A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attac…
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High 7.5
Denial of Service (DoS)
This affects all versions of package github.com/russellhaering/goxmldsig. There is a crash on nil-pointer dereference caused by sending malformed XML signatures.
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High 7.5
Clam AntiVirus (ClamAV) Software Null Pointer Dereference Vulnerability
A vulnerability in the EGG archive parsing module in Clam AntiVirus (ClamAV) Software versions 0.102.0 - 0.102.3 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to a null p…
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High 7.5CVE-2020-13934 EPSS 64%
Improper Restriction of Operations within the Bounds of a Memory Buffer in Apache Tomcat
An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur…
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High 7.5
Istio 1.4.x before 1.4.9 and Istio 1.5.x before 1.5.4 contain the following vulnerability when telemetry v2 is enabled:…
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High 7.5
Segmentation fault in SSL_check_chain
Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an i…
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High 7.5
Null Pointer Dereference in PHP Session Upload Progress
In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload proce…
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High 8.6
Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability
A vulnerability in the common Session Initiation Protocol (SIP) library of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerabi…
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High 8.6
Cisco IOS and IOS XE Software IP Ident Denial of Service Vulnerability
A vulnerability in the Ident protocol handler of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability exists because the affected software incorrectly handles memory structures,…
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High 7.5
An exploitable denial-of-service vulnerability exists in the Host Access Point Daemon (hostapd) on the NETGEAR N300 (WN…
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High 7.5
An exploitable denial-of-service vulnerability exists in the session handling functionality of the NETGEAR N300 (WNR200…
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High 7.5
Cisco Integrated Management Controller Unauthenticated Denial of Service Vulnerability
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…
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High 7.5
NULL Pointer Dereference in OpenCV.
An issue was discovered in OpenCV before 4.1.1. There is a NULL pointer dereference in the function cv::XMLParser::parse at modules/core/src/persistence.cpp.
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High 7.5
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 attacke…
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High 7.5
Aubio is vulnerable to a NULL pointer dereference in new_aubio_filterbank
aubio v0.4.0 to v0.4.8 has a NULL pointer dereference in new_aubio_filterbank via invalid n_filters.