Weakness (CWE)
CWE-131: Incorrect Calculation of Buffer Size
The product does not correctly calculate the size to be used when allocating a buffer.
How to prevent it (8 mitigations)
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Implementation
When allocating a buffer for the purpose of transforming, converting, or encoding an input, allocate enough memory to handle the largest possible encoding. For example, in a routine that converts "&" characters to "&" for HTML entity encoding, the output buffer needs to be at least 5 times as large as the input buffer.
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Implementation
Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
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Implementation
Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Implementation
When processing structured incoming data containing a size field followed by raw data, identify and resolve any inconsistencies between the size field and the actual size of the data (CWE-130).
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Implementation
When allocating memory that uses sentinels to mark the end of a data structure - such as NUL bytes in strings - make sure you also include the sentinel in your calculation of the total amount of memory that must be allocated.
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Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
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Implementation
Use sizeof() on the appropriate data type to avoid CWE-467.
Source: MITRE CWE-131
198 results · Feed
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Medium 5.5
Gimp: gimp: denial of service via crafted pvr image file
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High 7.8
GIMP JP2 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
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Medium 6.9
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Critical 9.8
A heap-based buffer overflow vulnerability exists in the HuffTable::initval functionality of LibRaw Commit 0b56545 and …
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High 7.5
Go JOSE affect by a panic in JWE decryption
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.4 and 3.0.5, decrypting a JS…
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High 7.1
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflat…
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High 7.5
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the…
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Medium 5.9
FreeRDP: ClearCodec Glyph Cache Count Desync - Heap OOB Read
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, pixel data from adjacent heap memory is rendered to screen, potentially leaking sensitive data to the attacker. This issue has been patched in version 3.24.2.
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High 7.5
FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is in…
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Medium 6.8
NVIDIA SNAP-4 Container contains a vulnerability in the configuration interface where an attacker on a VM may cause an …
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High 7.5
Incorrect boundary conditions in the Audio/Video: Web Codecs component
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
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Medium 6.2
TwistedBrush Pro Studio 24.06 Script Recorder Denial of Service
TwistedBrush Pro Studio 24.06 contains a denial of service vulnerability in the Script Recorder component that allows local attackers to crash the application by supplying an excessively large buffer. Attackers can paste a malicious string containing 500,000 …
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High 7.1
HTSlib BGZF index file reader has a heap buffer overflow
HTSlib is a library for reading and writing bioinformatics file formats. GZI files are used to index block-compressed GZIP [BGZF] files. In the GZI loading function, `bgzf_index_load_hfile()`, it was possible to trigger an integer overflow, leading to an unde…
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Critical 9.3
FreeRDP has a Heap Buffer Overflow in nsc_process_message() via Unchecked SURFACE_BITS_COMMAND Bitmap Dimensions
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, the gdi_surface_bits() function processes SURFACE_BITS_COMMAND messages sent by the RDP server. When the command is handled using NSCodec, the bmp.width and bmp.height values pr…
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Medium 6.8
ImageMagick has a write heap-buffer-overflow in PCL encoder via undersized output buffer
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, A heap-buffer-overflow vulnerability exists in the PCL encode due to an undersized output buffer allocation. This vulnerab…
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High 7.7
A vulnerability in the processing of Galois/Counter Mode (GCM)-encrypted Internet Key Exchange version 2 (IKEv2) IPsec …
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High 7.8
GIMP ICNS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
GIMP ICNS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that t…
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Medium 5.6
Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packe…
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High 7.8
HDF5 Affected by H5T__conv_struct_opt Heap Buffer Overflow
HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an `h5` file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a denial-of-service condition, and potentially further issues suc…
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Medium 6.5
Fixes to common vulnerabilities found in IBM Db2 Merge Backup for Linux, UNIX and Windows
IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the program to crash due to the incorrect calculation of a buffer size.
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Medium 6.9
In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names of all suppo…
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Medium 6.6
openCryptoki incorrectly calculates the buffer size in C_WrapKey with CKM_ECDH_AES_KEY_WRAP
openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host proce…
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Medium 6.1
iccDEV has Undefined Behavior - Null Pointer Passed to memcpy() in CIccTagSparseMatrixArray
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV has undefined behavior due to a null pointer passed to memcpy() in CIccTagSparseMatri…
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High 8.8
Azure Monitor Agent Remote Code Execution Vulnerability
Out-of-bounds write in Azure Monitor Agent allows an authorized attacker to execute code over a network.
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Critical 9.3
AIS-catcher has a Buffer Overflow vulnerability in `AIS::Message` leading to DoS/RCE
AIS-catcher is a multi-platform AIS receiver. Prior to version 0.64, a heap buffer overflow vulnerability has been identified in the AIS::Message class of AIS-catcher. This vulnerability allows an attacker to write approximately 1KB of arbitrary data into a 1…
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Medium 4.8
Grub2: grub2: out-of-bounds write via malicious usb device
A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. …
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High 8.8
Incorrect Calculation of Buffer Size in SCE-Mink
Memory corruption while processing a GP command response.
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Medium 6.5
Fixes to common vulnerabilities found in IBM Db2 High Performance Unload
IBM DB2 High Performance Unload 6.1.0.3, 5.1.0.1, 6.1.0.2, 6.5, 6.5.0.0 IF1, 6.1.0.1, 6.1, 5.1, 6.1.0.3, 5.1.0.1, 6.1.0.2, 6.5, 6.5.0.0 IF1, 6.1.0.1, 6.1, 5.1, 6.1.0.3, 5.1.0.1, 6.1.0.2, 6.5, 6.5.0.0 IF1, 6.1.0.1, 6.1, 5.1, 6.1.0.3, 5.1.0.1, 6.1.0.2, 6.5, 6.5…
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High 7.8
Incorrect Calculation of Buffer Size in HLOS
Memory corruption during PlayReady APP usecase while processing TA commands.
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Low 3.8
ImageMagick BlobStream Forward-Seek Under-Allocation
ImageMagick is free and open-source software used for editing and manipulating digital images. ImageMagick versions lower than 14.8.2 include insecure functions: SeekBlob(), which permits advancing the stream offset beyond the current end without increasing c…
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Medium 5.2
ESF-IDF BluFi Example Memory Overflow Vulnerability
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was vulnerable to memory overflows in two areas: Wi-Fi credential handling and Diffie–Hellman key exchange. This vulnerability is fixed in 5.4.1, 5.3…
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Medium 6.5
Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface flaps causes rpd crash and restart
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash. When the logical …
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High 7.8
Incorrect Calculation of Buffer Size in Video
Memory corruption while processing video packets received from video firmware.
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High 7.8
OpenVM byte decomposition of pc in AUIPC chip can overflow
OpenVM is a performant and modular zkVM framework built for customization and extensibility. In version 1.0.0, OpenVM is vulnerable to overflow through byte decomposition of pc in AUIPC chip. A typo results in the highest limb of pc being range checked to 8-b…
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Medium 5.6
quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffe…
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Low 2.9
In multispectral MIFF image processing in ImageMagick before 7.1.1-44, packet_size is mishandled (related to the render…
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Low 2.9
In MIFF image processing in ImageMagick before 7.1.1-44, image depth is mishandled after SetQuantumFormat is used.
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Medium 6.3
Stream HTTP wrapper truncates redirect location to 1024 bytes
In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when parsing HTTP redirect in the response to an HTTP request, there is currently limit on the location value size caused by limited size of the loca…
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Medium 6.5
OpenBSD wg(4) kernel crash
In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.
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Medium 6.2
When the assert() function in the GNU C Library versions 2.13 to 2.40 fails, it does not allocate enough space for the …