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
6,186 results · Feed
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the setbg_num parameter in the icp_setbg_img (…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the cameo.cameo.nslookup_target parameter in t…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the cameo.cameo.netstat_option parameter in th…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the wps_sta_enrollee_pin parameter in the acti…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the wps_sta_enrollee_pin parameter in the do_s…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the sys_service parameter in the setup_wizard_…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the login_name parameter in the do_graph_auth …
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the qcawifi.wifi%d_vap%d.maclist parameter in …
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the reboot_type parameter in the wizard_ipv6 (…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the update_file_name parameter in the auto_up_…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the reject_url parameter in the reject (sub_41…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the del_num parameter in the icp_delete_img (s…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the cameo.cameo.netstat_rsname parameter in th…
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the qcawifi.wifi%d_vap%d.maclist parameter in …
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Critical 9.8
TRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the setlogo_num parameter in the icp_setlogo_i…
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Medium 5.3
NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer (nvidia.ko), where an out-of-boun…
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High 7.1
NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where an input index is not val…
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlPwd_5g parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the ssid parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey1 parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepauth parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey3 parameter at /goform/WifiBasicSet.
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High 7.5
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the SYSPS parameter at /goform/SysToolChangePwd.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey2 parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlEn_5g parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlEn parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the security parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey4 parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlPwd parameter at /goform/WifiBasicSet.
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Critical 9.8
Tenda A15 V15.13.07.13 was discovered to contain a stack overflow via the security_5g parameter at /goform/WifiBasicSet.
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Critical 9.8
Out-of-bounds write in github.com/cloudflare/golz4
LZ4 bindings use a deprecated C API that is vulnerable to memory corruption, which could lead to arbitrary code execution if called with untrusted user input.
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the AccountP…
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the Key para…
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the PSK para…
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the Password…
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the Password…
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the Password…
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High 7.2
D-Link DIR-882 DIR882A1_FW130B06, DIR-878 DIR_878_FW1.30B08 was discovered to contain a stack overflow via the Password…
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High 8.8
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-based buffer over…