Security vulnerabilities and automated fixes for cpp issues
13 posts found
A critical heap buffer overflow vulnerability was discovered in `lib/OpdsParser/OpdsParser.cpp`, where the buffer allocation size was calculated *after* a fixed chunk size was used to allocate memory, meaning the actual bytes read could exceed the allocated buffer. On embedded devices parsing untrusted OPDS catalog data from the network, this flaw could allow a remote attacker to corrupt heap memory and potentially achieve arbitrary code execution. The fix was elegantly simple: move the `toRead`
A critical buffer overflow vulnerability was discovered and patched in `libs/intx/wrapper.cpp`, where `memcpy` operations wrote into fixed-size buffers without first validating that the copy length fit within the destination. Because these functions process externally-supplied data arriving over RPC, an attacker could potentially trigger heap or stack corruption remotely. The fix adds strict bounds and null-pointer checks before any memory operation takes place.
A critical buffer overflow vulnerability was discovered in RapidSpeech's `audio_processor.cpp`, where multiple `memcpy` calls used externally-influenced size parameters without validating destination buffer capacity. An attacker supplying crafted audio or model input could trigger out-of-bounds memory writes, potentially leading to crashes, memory corruption, or arbitrary code execution. The fix introduces explicit bounds checking before each copy operation, ensuring offsets never exceed allocat
A critical buffer overflow vulnerability was discovered in the Meshtastic firmware's radio packet handler, where an unchecked `memcpy` operation allowed any node on the mesh network to send a crafted packet with an oversized payload length field, potentially overwriting adjacent memory. Because Meshtastic mesh nodes communicate without authentication, this vulnerability was remotely exploitable by any attacker within radio range — or even further through mesh relay. The fix adds a simple but ess
A critical out-of-bounds heap read vulnerability was discovered in the Effekseer GLTF resource loader, where a `memcpy` operation copied data from a buffer without first verifying the source contained enough bytes. An attacker could craft a malicious GLTF file with truncated buffer data to crash the application or leak sensitive heap memory contents. The fix adds a simple but essential bounds check before the copy operation, ensuring the source buffer always contains at least as many bytes as th
A high-severity shell injection vulnerability was discovered in `src/RtlJaguarDevice.cpp`, where user-controlled values from API responses were directly interpolated into gRPCurl command strings without proper shell escaping. An attacker who controls API response data could inject shell metacharacters, causing arbitrary command execution when a user pastes and runs the generated command. The fix applies proper shell escaping to all user-controlled values before they are included in command strin
A high-severity shell injection vulnerability was discovered and patched in a distributed server's gRPCurl command generation logic, where user-controlled values from API responses were directly interpolated into shell command strings without proper escaping. An attacker who can influence API response data — such as headers, endpoints, or payloads — could inject shell metacharacters that execute arbitrary commands when a user pastes and runs the generated command. This fix eliminates the risk by
A critical heap buffer overflow vulnerability was discovered and patched in archo.cpp, a Mach-O binary parsing component used in mobile app signing toolchains. Attackers could craft malicious Mach-O binaries or dylib files to trigger memory corruption, potentially leading to arbitrary code execution. The fix adds proper bounds validation before memcpy operations, eliminating the ability for attacker-controlled file content to overflow heap buffers.
A critical heap buffer overflow vulnerability was discovered and patched in a Dubbo protocol module, where six unchecked `ngx_memcpy` calls could allow attackers to corrupt heap memory by sending crafted oversized string fields. This type of vulnerability — classified as CWE-120, a "Classic Buffer Copy Without Checking Size of Input" — is one of the oldest and most dangerous bug classes in C/C++ programming. Understanding how it works and how to prevent it is essential knowledge for any develope
A critical heap buffer overflow vulnerability was discovered and patched in the ndsrvp HAL filter routines, where multiple `memcpy` calls used computed sizes derived from image dimensions without validating they fit within destination buffers. An attacker supplying a crafted image could exploit this to corrupt heap memory, potentially achieving arbitrary code execution. This post breaks down how the vulnerability works, how it was fixed, and what developers can do to prevent similar issues.
A critical vulnerability in Tabby's UAC component allowed local attackers to predict Windows named pipe names generated with a weak pseudo-random number generator, enabling them to hijack privileged communication channels before the elevated process could claim them. This pipe squatting attack could grant unprivileged users the ability to inject commands that execute with Administrator or SYSTEM privileges. The fix removes the unsafe exec() pattern and replaces the predictable pipe naming scheme
A critical heap buffer overflow vulnerability was discovered and patched in a GeoIP database parser, where raw `memcpy` operations were performed without proper bounds validation across three separate code locations. An attacker who could supply a malicious GeoIP database file could potentially achieve arbitrary code execution or crash the application. The fix introduces strict bounds checking before every memory copy operation, eliminating the attack surface entirely.