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
3,733 results · Feed
-
High 8.8
Tenda AC15 HTTP POST Request SetLEDCf formsetschedled buffer overflow
A vulnerability was found in Tenda AC15 15.03.05.19_multi. It has been declared as critical. This vulnerability affects the function formsetschedled of the file /goform/SetLEDCf of the component HTTP POST Request Handler. The manipulation of the argument Time…
-
High 8.8
Tenda AC15 HTTP POST Request SetRemoteWebCfg formSetSafeWanWebMan stack-based overflow
A vulnerability was found in Tenda AC15 15.03.05.19_multi. It has been classified as critical. This affects the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg of the component HTTP POST Request Handler. The manipulation of the argument remo…
-
High 8.8
Tenda AC15 HTTP POST Request setPptpUserList formSetPPTPUserList buffer overflow
A vulnerability was found in Tenda AC15 15.03.05.19_multi and classified as critical. Affected by this issue is the function formSetPPTPUserList of the file /goform/setPptpUserList of the component HTTP POST Request Handler. The manipulation of the argument l…
-
High 8.8
Tenda AC9 HTTP POST Request SetRemoteWebCfg formSetSafeWanWebMan stack-based overflow
A vulnerability has been found in Tenda AC9 15.03.02.13 and classified as critical. Affected by this vulnerability is the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg of the component HTTP POST Request Handler. The manipulation of the arg…
-
High 8.8
Tenda AC9 POST Request AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability, which was classified as critical, has been found in Tenda AC9 15.03.02.13. Affected by this issue is the function fromadvsetlanip of the file /goform/AdvSetLanip of the component POST Request Handler. The manipulation of the argument lanMask …
-
High 8.8
Tenda AC8 WifiExtraSet fromSetWirelessRepeat stack-based overflow
A vulnerability was found in Tenda AC8 16.03.34.09. It has been declared as critical. Affected by this vulnerability is the function fromSetWirelessRepeat of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based bu…
-
High 8.8
Tenda AC8 SetSysTimeCfg fromSetSysTime stack-based overflow
A vulnerability was found in Tenda AC8 16.03.34.09. It has been classified as critical. Affected is the function fromSetSysTime of the file /goform/SetSysTimeCfg. The manipulation of the argument timeType leads to stack-based buffer overflow. It is possible t…
-
High 8.8
Tenda AC5 AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability, which was classified as critical, was found in Tenda AC5 1.0/15.03.06.47. This affects the function fromadvsetlanip of the file /goform/AdvSetLanip. The manipulation of the argument lanMask leads to buffer overflow. It is possible to initiate…
-
High 8.8
Tenda AC5 setPptpUserList formSetPPTPUserList buffer overflow
A vulnerability, which was classified as critical, has been found in Tenda AC5 15.03.06.47. Affected by this issue is the function formSetPPTPUserList of the file /goform/setPptpUserList. The manipulation of the argument list leads to buffer overflow. The att…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formPortFw 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/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type l…
-
High 8.8
TOTOLINK EX1200T HTTP POST Request formWlanRedirect buffer overflow
A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. This issue affects some unknown processing of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. The manipulation of the a…
-
High 8.8
TOTOLINK X15 HTTP POST Request formIpQoS buffer overflow
A vulnerability classified as critical was found in TOTOLINK X15 1.0.0-B20230714.1105. This vulnerability affects unknown code of the file /boafrm/formIpQoS of the component HTTP POST Request Handler. The manipulation of the argument mac leads to buffer overf…
-
High 8.8
TOTOLINK X15 HTTP POST Request formPortFw buffer overflow
A vulnerability classified as critical has been found in TOTOLINK X15 1.0.0-B20230714.1105. This affects an unknown part of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type leads to buffer o…
-
High 8.8
TOTOLINK X15 HTTP POST Request formReflashClientTbl buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been rated as critical. Affected by this issue is some unknown functionality of the file /boafrm/formReflashClientTbl of the component HTTP POST Request Handler. The manipulation of the ar…
-
High 8.8
TOTOLINK X15 HTTP POST Request formWsc buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWsc of the component HTTP POST Request Handler. The manipulation of the argume…
-
High 8.8
TOTOLINK X15 HTTP POST Request formDMZ buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been classified as critical. Affected is an unknown function of the file /boafrm/formDMZ of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to bu…
-
High 8.8
TOTOLINK X15 HTTP POST Request formWirelessTbl buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105 and classified as critical. This issue affects some unknown processing of the file /boafrm/formWirelessTbl of the component HTTP POST Request Handler. The manipulation of the argument submit-url l…
-
High 8.8
TOTOLINK X15 HTTP POST Request formSaveConfig buffer overflow
A vulnerability classified as critical has been found in TOTOLINK X15 1.0.0-B20230714.1105. This affects an unknown part of the file /boafrm/formSaveConfig of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer…
-
High 8.8
TOTOLINK X15 HTTP POST Request formStats buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been rated as critical. Affected by this issue is some unknown functionality of the file /boafrm/formStats of the component HTTP POST Request Handler. The manipulation of the argument subm…
-
High 8.8
TOTOLINK X15 HTTP POST Request formDosCfg buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formDosCfg of the component HTTP POST Request Handler. The manipulation of the arg…
-
High 8.8
TOTOLINK X15 HTTP POST Request formNtp buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been classified as critical. 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 to bu…
-
High 8.8
TOTOLINK X15 HTTP POST Request formSetLg buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105 and classified as critical. This issue affects some unknown processing of the file /boafrm/formSetLg of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads t…
-
High 8.8
TOTOLINK X15 HTTP POST Request formWlanRedirect buffer overflow
A vulnerability has been found in TOTOLINK X15 1.0.0-B20230714.1105 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. The manipulation of the argument redirect-…
-
High 8.8
Tenda CH22 Natlimit formNatlimit stack-based overflow
A vulnerability, which was classified as critical, was found in Tenda CH22 1.0.0.1. This affects the function formNatlimit of the file /goform/Natlimit. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the…
-
High 8.8
TOTOLINK N302R Plus HTTP POST Request formFilter buffer overflow
A vulnerability has been found in TOTOLINK N302R Plus up to 3.4.0-B20201028 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of t…
-
High 8.8
TOTOLINK N302R Plus HTTP POST Request formPortFw buffer overflow
A vulnerability, which was classified as critical, was found in TOTOLINK N302R Plus up to 3.4.0-B20201028. Affected is an unknown function of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type…
-
High 7.3
FreeFloat FTP Server REIN Command buffer overflow
A vulnerability was found in FreeFloat FTP Server 1.0. It has been rated as critical. Affected by this issue is some unknown functionality of the component REIN Command Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. T…
-
High 7.3
FreeFloat FTP Server XMKD Command buffer overflow
A vulnerability was found in FreeFloat FTP Server 1.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component XMKD Command Handler. The manipulation leads to buffer overflow. The attack can be launched re…
-
High 7.3
FreeFloat FTP Server XCWD Command buffer overflow
A vulnerability was found in FreeFloat FTP Server 1.0. It has been classified as critical. Affected is an unknown function of the component XCWD Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The expl…
-
High 7.3
FreeFloat FTP Server RESTART Command buffer overflow
A vulnerability was found in FreeFloat FTP Server 1.0 and classified as critical. This issue affects some unknown processing of the component RESTART Command Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit…
-
Low 2.5
Radare2 radiff2 pal.c r_cons_pal_init memory corruption
A vulnerability was found in Radare2 5.9.9. It has been classified as problematic. Affected is the function r_cons_pal_init in the library /libr/cons/pal.c of the component radiff2. The manipulation of the argument -T leads to memory corruption. An attack has…
-
Low 2.5
Radare2 radiff2 cons.c r_cons_context_break_pop memory corruption
A vulnerability was found in Radare2 5.9.9 and classified as problematic. This issue affects the function r_cons_context_break_pop in the library /libr/cons/cons.c of the component radiff2. The manipulation of the argument -T leads to memory corruption. The a…
-
Low 2.5
Radare2 radiff2 pal.c r_cons_rainbow_free memory corruption
A vulnerability has been found in Radare2 5.9.9 and classified as problematic. This vulnerability affects the function r_cons_rainbow_free in the library /libr/cons/pal.c of the component radiff2. The manipulation of the argument -T leads to memory corruption…
-
Low 2.5
Radare2 radiff2 pal.c r_cons_pal_init memory corruption
A vulnerability, which was classified as problematic, was found in Radare2 5.9.9. This affects the function r_cons_pal_init in the library /libr/cons/pal.c of the component radiff2. The manipulation of the argument -T leads to memory corruption. Attacking loc…
-
Low 2.5
Radare2 radiff2 cons.c r_cons_flush use after free
A vulnerability, which was classified as problematic, has been found in Radare2 5.9.9. Affected by this issue is the function r_cons_flush in the library /libr/cons/cons.c of the component radiff2. The manipulation of the argument -T leads to use after free. …
-
Low 2.5
Radare2 radiff2 cons.c cons_stack_load memory corruption
A vulnerability classified as problematic was found in Radare2 5.9.9. Affected by this vulnerability is the function cons_stack_load in the library /libr/cons/cons.c of the component radiff2. The manipulation of the argument -T leads to memory corruption. An …
-
Low 2.5
Radare2 radiff2 pal.c r_cons_pal_init memory corruption
A vulnerability classified as problematic has been found in Radare2 5.9.9. Affected is the function r_cons_pal_init in the library /libr/cons/pal.c of the component radiff2. The manipulation leads to memory corruption. The attack needs to be approached locall…
-
Low 2.5
Radare2 radiff2 cons.c r_cons_is_breaked memory corruption
A vulnerability was found in Radare2 5.9.9. It has been rated as problematic. This issue affects the function r_cons_is_breaked in the library /libr/cons/cons.c of the component radiff2. The manipulation of the argument -T leads to memory corruption. It is po…
-
Low 3.3CVE-2025-5640 Public exploit
PX4-Autopilot TRAJECTORY_REPRESENTATION_WAYPOINTS Message mavlink_receiver.cpp stack-based overflow
A vulnerability was found in PX4-Autopilot 1.12.3. It has been classified as problematic. This affects the function MavlinkReceiver::handle_message_trajectory_representation_waypoints of the file mavlink_receiver.cpp of the component TRAJECTORY_REPRESENTATION…
-
High 7.3
PCMan FTP Server SYSTEM Command buffer overflow
A vulnerability, which was classified as critical, was found in PCMan FTP Server 2.0.7. Affected is an unknown function of the component SYSTEM Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The explo…