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
Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, …
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Critical 9.8
Some smartphones have the out-of-bounds write vulnerability. Successful exploitation of this vulnerability may cause sy…
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Critical 9.8
Some smartphones have the out-of-bounds write vulnerability. Successful exploitation of this vulnerability may cause sy…
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Critical 9.8
Fingerprint calibration has a vulnerability of lacking boundary judgment. Successful exploitation of this vulnerability…
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Critical 9.8
Some smartphones have the out-of-bounds write vulnerability.Successful exploitation of this vulnerability may cause sys…
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Critical 9.8
Some smartphones have the out-of-bounds write vulnerability.Successful exploitation of this vulnerability may cause sys…
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Critical 9.8
pdftojson commit 94204bb was discovered to contain a stack overflow via the component Object::copy(Object*):Object.cc.
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Critical 9.8
pdftojson commit 94204bb was discovered to contain a stack overflow via the component Stream::makeFilter(char*, Stream*…
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Critical 9.8
HCL Domino is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView.
HCL Domino is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted Lotus Ami Pro file. This is differ…
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Critical 9.8
HCL Domino is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView
HCL Domino is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted WordPerfect file. This vulnerabi…
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Critical 9.8
HCL Domino is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView.
HCL Domino is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted Lotus Ami Pro file. This is differ…
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Critical 9.8
HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView
HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted Lotus Ami Pro file. This is differe…
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Critical 9.8
HCL Notes is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView
HCL Notes is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted WordPerfect file. This vulnerabil…
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Critical 9.8
HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView
HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView. This could allow a remote unauthenticated attacker to crash the application or execute arbitrary code via a crafted Lotus Ami Pro file. This is differe…
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Critical 9.8
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in tvOS 16.2, macOS Monterey 12.6.2, macOS V…
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Critical 9.1
Out of Bound Write in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Write in xrdp_mm_trans_process_drdynvc_channel_open() function. There are no known workarou…
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Critical 9.8
Buffer overflow in firmware lewei_cam binary version 2.0.10 in Force 1 Discovery Wifi U818A HD+ FPV Drone allows attack…
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Critical 9.8
Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setSnmpInfo.
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Critical 9.8
Tenda i21 V1.0.0.14(4656) has a stack overflow vulnerability via /goform/setSysPwd.
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Critical 9.8
Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setDiagnoseInfo.
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Critical 9.8
Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setUplinkInfo.
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Critical 9.8
Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/AddSysLogRule.
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Critical 9.6
Heap buffer overflow in GPU
Heap buffer overflow in GPU in Google Chrome prior to 107.0.5304.121 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
KEV Nov 28, 2022 -
Critical 9.8
TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post …
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Critical 9.8
Netgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameter openvpn_server_ip.
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Critical 9.8
Netgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameter enable_band_steering.
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Critical 9.8
D-Link DIR-882 1.10B02 and 1.20B06 is vulnerable to Buffer Overflow via webGetVarString.
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Critical 9.8
D-Link DIR878 1.02B04 and 1.02B05 are vulnerable to Buffer Overflow.
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Critical 9.8
Netgear R7000P V1.3.0.8, V1.3.1.64 is vulnerable to Buffer Overflow via parameters: stamode_dns1_pri and stamode_dns1_s…
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Critical 9.8
Netgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameter wan_dns1_sec.
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Critical 9.8
D-Link DIR-882 1.10B02 and 1.20B06 is vulnerable to Buffer Overflow.
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Critical 9.8
Netgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameters KEY1 and KEY2.
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Critical 9.8
Netgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameter enable_band_steering.
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Critical 9.8
Netgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow via wan_dns1_pri.
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Critical 9.8
Netgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow via parameter openvpn_push1.
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Critical 9.8
Netgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameters: starthour, startminute , e…
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Critical 9.8
Netgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameter wan_dns1_pri.
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Critical 9.8
Netgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow via parameters apmode_dns1_pri and apmode_dns1_sec.
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Critical 9.8
Netgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameter openvpn_push1.