Weakness (CWE)
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
How to prevent it (7 mitigations)
-
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.
-
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.
-
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.
-
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.
-
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].
-
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].
-
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-119
2,176 results · Clear filters · Feed
-
High 8.1
Memory safety bugs fixed in Firefox 140 and Thunderbird 140
Memory safety bugs present in Firefox 139 and Thunderbird 139. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefo…
-
High 8.6
llama.cpp tokenizer signed vs. unsigned heap overflow
llama.cpp is an inference of several LLM models in C/C++. Prior to version b5721, there is a signed vs. unsigned integer overflow in llama.cpp's tokenizer implementation (llama_vocab::tokenize) (src/llama-vocab.cpp:3036) resulting in unintended behavior in to…
-
High 8.8
Netgear EX6150 sub_410090 stack-based overflow
A vulnerability classified as critical has been found in Netgear EX6150 1.0.0.46_1.0.76. This affects the function sub_410090. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclose…
-
High 8.8
Netgear EX6100 sub_415EF8 stack-based overflow
A vulnerability was found in Netgear EX6100 1.0.2.28_1.1.138. It has been rated as critical. Affected by this issue is the function sub_415EF8. The manipulation leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been di…
-
High 8.8
TOTOLINK A3002R formRoute stack-based overflow
A vulnerability was found in TOTOLINK A3002R 1.1.1-B20200824.0128. It has been rated as critical. This issue affects the function formRoute of the file /boafrm/formRoute. The manipulation of the argument subnet leads to stack-based buffer overflow. The attack…
-
High 8.8
TOTOLINK A3002R formWlanMultipleAP stack-based overflow
A vulnerability was found in TOTOLINK A3002R 1.1.1-B20200824.0128. It has been declared as critical. This vulnerability affects the function formWlanMultipleAP of the file /boafrm/formWlanMultipleAP. The manipulation of the argument submit-url leads to stack-…
-
High 8.8
TOTOLINK X15 HTTP POST Request formIpv6Setup buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url…
-
High 8.8
TOTOLINK N300RH HTTP POST Message formPortFw buffer overflow
A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formPortFw of the component HTTP POST Message Handler. The manipulation of the argument servi…
-
High 8.8
TOTOLINK X15 HTTP POST Request formIPv6Addr buffer overflow
A vulnerability, which was classified as critical, was found in TOTOLINK X15 1.0.0-B20230714.1105. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads t…
-
High 8.8
TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr buffer overflow
A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Add…
-
High 8.8
D-Link DIR-619L formSetACLFilter stack-based overflow
A vulnerability was found in D-Link DIR-619L 2.06B01 and classified as critical. This issue affects the function formSetACLFilter of the file /goform/formSetACLFilter. The manipulation of the argument curTime leads to stack-based buffer overflow. The attack m…
-
High 8.8
D-Link DIR-619L formWlSiteSurvey formSetWizard1 stack-based overflow
A vulnerability has been found in D-Link DIR-619L 2.06B01 and classified as critical. This vulnerability affects the function formSetWizard1 of the file /goform/formWlSiteSurvey. The manipulation of the argument curTime leads to stack-based buffer overflow. T…
-
High 8.8
D-Link DIR-619L formSetWizard1 stack-based overflow
A vulnerability, which was classified as critical, was found in D-Link DIR-619L 2.06B01. This affects the function formSetWizard1 of the file /goform/formSetWizard1. The manipulation of the argument curTime leads to stack-based buffer overflow. It is possible…
-
High 8.8
D-Link DIR-619L formSetEnableWizard stack-based overflow
A vulnerability, which was classified as critical, has been found in D-Link DIR-619L 2.06B01. Affected by this issue is the function formSetEnableWizard of the file /goform/formSetEnableWizard. The manipulation of the argument curTime leads to stack-based buf…
-
High 8.8
D-Link DIR-619L formWlanGuestSetup stack-based overflow
A vulnerability classified as critical was found in D-Link DIR-619L 2.06B01. Affected by this vulnerability is the function formWlanGuestSetup of the file /goform/formWlanGuestSetup. The manipulation of the argument curTime leads to stack-based buffer overflo…
-
High 8.8
D-Link DIR-619L formdumpeasysetup stack-based overflow
A vulnerability classified as critical has been found in D-Link DIR-619L 2.06B01. Affected is the function formdumpeasysetup of the file /goform/formdumpeasysetup. The manipulation of the argument curTime/config.save_network_enabled leads to stack-based buffe…
-
High 8.8
D-Link DIR-619L formSetEmail stack-based overflow
A vulnerability was found in D-Link DIR-619L 2.06B01. It has been rated as critical. This issue affects the function formSetEmail of the file /goform/formSetEmail. The manipulation of the argument curTime/config.smtp_email_subject leads to stack-based buffer …
-
High 8.8
D-Link DIR-619L formSetDomainFilter stack-based overflow
A vulnerability was found in D-Link DIR-619L 2.06B01. It has been declared as critical. This vulnerability affects unknown code of the file /goform/formSetDomainFilter. The manipulation of the argument curTime/sched_name_%d/url_%d leads to stack-based buffer …
-
High 8.8
TOTOLINK A3002R/A3002RU HTTP POST Request formTmultiAP buffer overflow
A vulnerability was found in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615/4.0.0-B20230531.1404. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formTmultiAP of the component HTTP POST Reques…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formTmultiAP buffer overflow
A vulnerability was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formTmultiAP of the component HTTP POST Request Handler. The manipulation of the argument submit-url …
-
High 8.8
D-Link DIR-867 Query String strncpy stack-based overflow
A vulnerability has been found in D-Link DIR-867 1.0 and classified as critical. This vulnerability affects the function strncpy of the component Query String Handler. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely…
-
High 8.8
D-Link DIR-815 hedwig.cgi sub_403794 stack-based overflow
A vulnerability was found in D-Link DIR-815 1.01. It has been declared as critical. This vulnerability affects the function sub_403794 of the file hedwig.cgi. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. The exp…
-
High 8.8
TOTOLINK EX1200T cstecgi.cgi setStaticDhcpConfig stack-based overflow
A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument Comment leads to stack-based buffer overfl…
-
High 8.8
D-Link DIR-825 HTTP POST Request sub_4091AC stack-based overflow
A vulnerability has been found in D-Link DIR-825 2.03 and classified as critical. This vulnerability affects the function sub_4091AC of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer overflow. The attack can be initiated…
-
High 8.8
D-Link DIR-825 HTTP POST Request do_file stack-based overflow
A vulnerability, which was classified as critical, was found in D-Link DIR-825 2.03. This affects the function do_file of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack rem…
-
High 8.8
llama.cpp Vulnerable to Buffer Overflow via Malicious GGUF Model
llama.cpp is an inference of several LLM models in C/C++. Prior to version b5662, an attacker‐supplied GGUF model vocabulary can trigger a buffer overflow in llama.cpp’s vocabulary‐loading code. Specifically, the helper _try_copy in llama.cpp/src/vocab.cpp: l…
-
High 8.8
TOTOLINK X15 HTTP POST Request formTmultiAP buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formTmultiAP of the component HTTP POST Request Handler. The manipulation of the argument submit-url …
-
High 8.8
TOTOLINK A3002R HTTP POST Request formMultiAP buffer overflow
A vulnerability was found in TOTOLINK A3002R 4.0.0-B20230531.1404. It has been classified as critical. This affects an unknown part of the file /boafrm/formMultiAP of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads t…
-
High 8.8
TOTOLINK A3002RU HTTP POST Request formMultiAP buffer overflow
A vulnerability was found in TOTOLINK A3002RU 3.0.0-B20230809.1615 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formMultiAP of the component HTTP POST Request Handler. The manipulation of the argument su…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formMultiAP buffer overflow
A vulnerability has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formMultiAP of the component HTTP POST Request Handler. The manipulation of th…
-
High 8.8
D-Link DIR-665 HTTP POST Request sub_AC78 stack-based overflow
A vulnerability classified as critical has been found in D-Link DIR-665 1.00. This affects the function sub_AC78 of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely.…
-
High 8.2
TP-Link TL-WR940N, TL-WR841N WanSlaacCfgRpm.htm buffer overflow
A vulnerability has been found in TP-Link TL-WR940N V4 and TL-WR841N V11. Affected by this issue is some unknown functionality of the file /userRpm/WanSlaacCfgRpm.htm, which may lead to buffer overflow. The attack may be launched remotely. This vulnerability …
-
High 8.8
TOTOLINK X15 HTTP POST Request formMultiAP buffer overflow
A vulnerability classified as critical was found in TOTOLINK X15 1.0.0-B20230714.1105. Affected by this vulnerability is an unknown functionality of the file /boafrm/formMultiAP of the component HTTP POST Request Handler. The manipulation of the argument subm…
-
High 8.8
TOTOLINK A3002R HTTP POST Request formSysLog buffer overflow
A vulnerability classified as critical has been found in TOTOLINK A3002R 4.0.0-B20230531.1404. Affected is an unknown function of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buff…
-
High 8.8
TOTOLINK A3002RU HTTP POST Request formSysLog buffer overflow
A vulnerability was found in TOTOLINK A3002RU 3.0.0-B20230809.1615. It has been rated as critical. This issue affects some unknown processing of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-ur…
-
High 8.8
TOTOLINK A702R HTTP POST Request formSysLog buffer overflow
A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-url …
-
High 8.8
TOTOLINK X15 HTTP POST Request formSysLog buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been classified as critical. This affects an unknown part of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to bu…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formSysLog buffer overflow
A vulnerability was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument s…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formSysCmd buffer overflow
A vulnerability has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formSysCmd of the component HTTP POST Request Handler. The manipulation of the…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formNtp buffer overflow
A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is an unknown function of the file /boafrm/formNtp of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads …