Weakness (CWE)
CWE-787: Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
How to prevent it (7 mitigations)
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Requirements
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
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Operation, Build and Compilation
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
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Implementation
Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
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Operation, Build and Compilation
Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
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Operation
Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
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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.
Source: MITRE CWE-787
761 results · Clear filters · Feed
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Critical 9.8
Tenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the R7WebsSecurityHandler function.…
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Critical 9.8
Tenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the saveParentControlInfo function.…
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Critical 9.8
In Artifex Ghostscript through 10.01.0, there is a buffer overflow leading to potential corruption of data internal to …
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Critical 9.8CVE-2022-45460 Public exploit
Multiple Xiongmai NVR devices, including MBD6304T V4.02.R11.00000117.10001.131900.00000 and NBD6808T-PL V4.02.R11.C7431…
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Critical 9.8
In ProfSixDecomTcpSACKoption of RohcPacketCommon, there is a possible out of bounds write due to a missing bounds check…
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Critical 9.8
In gatt_process_prep_write_rsp of gatt_cl.cc, there is a possible out of bounds write due to a missing bounds check. Th…
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Critical 9.8
In SDP_AddAttribute of sdp_db.cc, there is a possible out of bounds write due to an incorrect bounds check. This could …
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Critical 9.8
In Pixel cellular firmware, there is a possible out of bounds write due to a missing bounds check. This could lead to r…
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Critical 9.8
In sms_SendMmCpErrMsg of sms_MmConManagement.c, there is a possible out of bounds write due to a heap buffer overflow. …
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Critical 10.0
Deno improperly handles resizable ArrayBuffer
Deno is a runtime for JavaScript and TypeScript that uses V8 and is built in Rust. Resizable ArrayBuffers passed to asynchronous functions that are shrunk during the asynchronous operation could result in an out-of-bound read/write. It is unlikely that this h…
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Critical 9.8
Out of bounds memory access in WebHID in Google Chrome prior to 111.0.5563.110 allowed a remote attacker to potentially…
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Critical 9.8
Tenda W20E v15.11.0.6 (US_W20EV4.0br_v15.11.0.6(1068_1546_841)_CN_TDC) is vulnerable to Buffer Overflow via function fo…
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Critical 9.8
Tenda W20E v15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841 is vulnerable to Buffer Overflow via function formSetSysTi…
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Critical 10.0CVE-2022-43605 EPSS 14%
An out-of-bounds write vulnerability exists in the SetAttributeList attribute_count_request functionality of EIP Stack …
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Critical 10.0CVE-2022-43604 EPSS 14%
An out-of-bounds write vulnerability exists in the GetAttributeList attribute_count_request functionality of EIP Stack …
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Critical 9.8
Tenda AX3 V16.03.12.11 was discovered to contain a stack overflow via the shareSpeed parameter at /goform/WifiGuestSet.
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Critical 10.0
Guest-controlled out-of-bounds read/write on x86_64 in wasmtime
wasmtime is a fast and secure runtime for WebAssembly. In affected versions wasmtime's code generator, Cranelift, has a bug on x86_64 targets where address-mode computation mistakenly would calculate a 35-bit effective address instead of WebAssembly's defined…
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Critical 9.8
Unauthenticated Stack-Based Buffer Overflow Vulnerabilities in the PAPI Protocol
There are stack-based buffer overflow vulnerabilities that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba Networks access point management protocol) UDP port (8211). Successful exploitation…
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Critical 9.8
Unauthenticated Stack-Based Buffer Overflow Vulnerabilities in the PAPI Protocol
There are stack-based buffer overflow vulnerabilities that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba Networks access point management protocol) UDP port (8211). Successful exploitation…
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Critical 9.8
Tenda Router W30E V1.0.1.25(633) is vulnerable to Buffer Overflow in function fromRouteStatic via parameters entrys and…
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Critical 9.8
Tenda AC500 V2.0.1.9(1307) is vulnerable to Buffer Overflow in function fromAddressNat via parameters entrys and mitInt…
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Critical 9.8
Tenda AC500 V2.0.1.9(1307) is vulnerable to Buffer Overflow in function fromRouteStatic via parameters entrys and mitIn…
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Critical 9.8
Pre-auth memory corruption in HPE Serviceguard
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Critical 9.8
Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/…
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Critical 9.8
NETGEAR Nighthawk WiFi Mesh systems and routers are affected by a stack-based buffer overflow vulnerability. This affec…
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Critical 9.8
D-Link N300 WI-FI Router DIR-605L v2.13B01 was discovered to contain a stack overflow via the curTime parameter at /gof…
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Critical 9.8
D-Link N300 WI-FI Router DIR-605L v2.13B01 was discovered to contain a stack overflow via the webpage parameter at /gof…
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Critical 9.8
D-Link N300 WI-FI Router DIR-605L v2.13B01 was discovered to contain a stack overflow via the config.smtp_email_subject…
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Critical 9.8
D-Link N300 WI-FI Router DIR-605L v2.13B01 was discovered to contain a stack overflow via the FILECODE parameter at /go…
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Critical 9.8
D-Link N300 WI-FI Router DIR-605L v2.13B01 was discovered to contain a stack overflow via the curTime parameter at /gof…
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Critical 9.1
Hardcoded credentials in Global Facilities Management Software (GFMS) Version 3 software distributed by Key Systems Man…
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Critical 9.8
pycdc commit 44a730f3a889503014fec94ae6e62d8401cb75e5 was discovered to contain a stack overflow via the component ASTr…
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Critical 9.8
Buffer OverFlow Vulnerability in MojoJson v1.2.3 allows an attacker to execute arbitrary code via the SkipString functi…
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Critical 9.8
Buffer OverFlow Vulnerability in Barenboim json-parser master and v1.1.0 fixed in v1.1.1 allows an attacker to execute …
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Critical 9.8
sprintf in the GNU C Library (glibc) 2.37 has a buffer overflow (out-of-bounds write) in some situations with a correct…
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Critical 9.8
Tenda W20E v15.11.0.6 was discovered to contain multiple stack overflows in the function formSetStaticRoute via the par…
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Critical 9.8
Tenda AC18 V15.03.05.19 is vulnerable to Buffer Overflow via /goform/FUN_000c2318.
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Critical 9.8
Tenda AC18 V15.03.05.19 is vulnerable to Buffer Overflow via /goform/initIpAddrInfo.
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Critical 9.8
Tenda AC18 V15.03.05.19 is vulnerable to Buffer Overflow via /goform/add_white_node.
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Critical 9.8
Tenda AC18 V15.03.05.19 is vulnerable to Buffer Overflow via /goform/formWifiBasicSet.