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 FH451 SafeClientFilter fromSafeClientFilter stack-based overflow
A vulnerability classified as critical was found in Tenda FH451 1.0.0.9. This vulnerability affects the function fromSafeClientFilter of the file /goform/SafeClientFilter. The manipulation of the argument Go/page leads to stack-based buffer overflow. The atta…
-
High 8.8
Tenda FH451 PPTPUserSetting fromPptpUserSetting stack-based overflow
A vulnerability classified as critical has been found in Tenda FH451 1.0.0.9. This affects the function fromPptpUserSetting of the file /goform/PPTPUserSetting. The manipulation of the argument delno leads to stack-based buffer overflow. It is possible to ini…
-
High 8.8
Tenda FH451 PPTPDClient fromPptpUserAdd stack-based overflow
A vulnerability, which was classified as critical, was found in Tenda FH451 1.0.0.9. This affects the function fromPptpUserAdd of the file /goform/PPTPDClient. The manipulation of the argument Username leads to stack-based buffer overflow. It is possible to i…
-
High 8.8CVE-2025-7795 Public exploit
Tenda FH451 P2pListFilter fromP2pListFilter stack-based overflow
A vulnerability, which was classified as critical, has been found in Tenda FH451 1.0.0.9. Affected by this issue is the function fromP2pListFilter of the file /goform/P2pListFilter. The manipulation of the argument page leads to stack-based buffer overflow. T…
-
High 8.8
Tenda FH451 NatStaticSetting fromNatStaticSetting stack-based overflow
A vulnerability classified as critical was found in Tenda FH451 1.0.0.9. Affected by this vulnerability is the function fromNatStaticSetting of the file /goform/NatStaticSetting. The manipulation of the argument page leads to stack-based buffer overflow. The …
-
High 8.8
Tenda FH451 webtypelibrary formWebTypeLibrary stack-based overflow
A vulnerability classified as critical has been found in Tenda FH451 1.0.0.9. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary. The manipulation of the argument webSiteId leads to stack-based buffer overflow. It is possible to la…
-
High 8.8
Tenda FH451 SafeEmailFilter formSafeEmailFilter stack-based overflow
A vulnerability was found in Tenda FH451 1.0.0.9. It has been rated as critical. This issue affects the function formSafeEmailFilter of the file /goform/SafeEmailFilter. The manipulation of the argument page leads to stack-based buffer overflow. The attack ma…
-
High 8.8
D-Link DI-8100 HTTP Request menu_nat.asp stack-based overflow
A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been classified as critical. This affects an unknown part of the file /menu_nat.asp of the component HTTP Request Handler. The manipulation of the argument out_addr/in_addr/out_port/proto leads to…
-
High 8.8
D-Link DI-8100 HTTP Request menu_nat_more.asp stack-based overflow
A vulnerability, which was classified as critical, has been found in D-Link DI-8100 16.07.26A1. This issue affects some unknown processing of the file /menu_nat_more.asp of the component HTTP Request Handler. The manipulation leads to stack-based buffer overf…
-
High 8.8
TOTOLINK T6 HTTP POST Request cstecgi.cgi setDiagnosisCfg buffer overflow
A vulnerability, which was classified as critical, has been found in TOTOLINK T6 up to 4.1.5cu.748_B20211015. Affected by this issue is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation …
-
High 8.8
Tenda FH451 POST Request WizardHandle fromWizardHandle buffer overflow
A vulnerability classified as critical has been found in Tenda FH451 1.0.0.9. This affects the function fromWizardHandle of the file /goform/WizardHandle of the component POST Request Handler. The manipulation of the argument PPW leads to buffer overflow. It …
-
High 8.4CVE-2025-34106 Public exploit
PDF Shaper v3.5/3.6 Buffer Overflow via Convert to Image Feature
A buffer overflow vulnerability exists in PDF Shaper versions 3.5 and 3.6 when converting a crafted PDF file to an image using the 'Convert PDF to Image' functionality. An attacker can exploit this vulnerability by tricking a user into opening a maliciously c…
-
Medium 5.5
gmg137 snap7-rs Public API pthread_cond_destroy memory corruption
A vulnerability, which was classified as critical, has been found in gmg137 snap7-rs up to 1.142.1. Affected by this issue is the function pthread_cond_destroy of the component Public API. The manipulation leads to memory corruption. The exploit has been disc…
-
High 7.2
D-Link DI-8100 HTTP Request jingx.asp stack-based overflow
A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been classified as critical. Affected is an unknown function of the file /jingx.asp of the component HTTP Request Handler. The manipulation leads to stack-based buffer overflow. It is possible to …
-
High 7.2
D-Link DI-8100 HTTP Request arp_sys.asp stack-based overflow
A vulnerability was found in D-Link DI-8100 16.07.26A1 and classified as critical. This issue affects some unknown processing of the file /arp_sys.asp of the component HTTP Request Handler. The manipulation leads to stack-based buffer overflow. The attack may…
-
High 8.8
Tenda AX1803 setWifiFilterCfg formSetWifiMacFilterCfg stack-based overflow
A vulnerability classified as critical was found in Tenda AX1803 1.0.0.1. Affected by this vulnerability is the function formSetWifiMacFilterCfg of the file /goform/setWifiFilterCfg. The manipulation of the argument deviceList leads to stack-based buffer over…
-
High 8.8
Tenda AX1803 setMacFilterCfg formSetMacFilterCfg stack-based overflow
A vulnerability classified as critical has been found in Tenda AX1803 1.0.0.1. Affected is the function formSetMacFilterCfg of the file /goform/setMacFilterCfg. The manipulation of the argument deviceList leads to stack-based buffer overflow. It is possible t…
-
High 8.8
Tenda FH1205 WifiExtraSet formWifiExtraSet stack-based overflow
A vulnerability was found in Tenda FH1205 2.0.0.7(775). It has been rated as critical. This issue affects the function formWifiExtraSet of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. The …
-
High 8.8
Tenda AC500 setWtpData formSetAPCfg stack-based overflow
A vulnerability was found in Tenda AC500 2.0.1.9(1307). It has been declared as critical. Affected by this vulnerability is the function formSetAPCfg of the file /goform/setWtpData. The manipulation of the argument radio_2g_1 leads to stack-based buffer overf…
-
High 8.8
UTT HiPER 840G aspApBasicConfigUrcp buffer overflow
A vulnerability classified as critical has been found in UTT HiPER 840G up to 3.1.1-190328. This affects an unknown part of the file /goform/aspApBasicConfigUrcp. The manipulation of the argument Username leads to buffer overflow. It is possible to initiate t…
-
High 8.8
UTT HiPER 840G aspRemoteApConfTempSend buffer overflow
A vulnerability was found in UTT HiPER 840G up to 3.1.1-190328. It has been rated as critical. Affected by this issue is some unknown functionality of the file /goform/aspRemoteApConfTempSend. The manipulation of the argument remoteSrcTemp leads to buffer ove…
-
High 8.8
Tenda FH1201 PPTPDClient fromPptpUserAdd stack-based overflow
A vulnerability was found in Tenda FH1201 1.2.0.14(408). It has been declared as critical. Affected by this vulnerability is the function fromPptpUserAdd of the file /goform/PPTPDClient. The manipulation of the argument modino/username leads to stack-based bu…
-
High 8.8
Tenda FH1201 GstDhcpSetSer fromGstDhcpSetSer stack-based overflow
A vulnerability was found in Tenda FH1201 1.2.0.14(408). It has been classified as critical. Affected is the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer. The manipulation of the argument dips leads to stack-based buffer overflow. It is possib…
-
High 8.8
Tenda FH1201 L7Prot frmL7ProtForm stack-based overflow
A vulnerability was found in Tenda FH1201 1.2.0.14(408) and classified as critical. This issue affects the function frmL7ProtForm of the file /goform/L7Prot. The manipulation of the argument page leads to stack-based buffer overflow. The attack may be initiat…
-
High 8.8
Tenda FH1201 SafeEmailFilter formSafeEmailFilter stack-based overflow
A vulnerability has been found in Tenda FH1201 1.2.0.14(408) and classified as critical. This vulnerability affects the function formSafeEmailFilter of the file /goform/SafeEmailFilter. The manipulation of the argument page leads to stack-based buffer overflo…
-
Medium 5.3
GNU Binutils elf.c bfd_elf_set_group_contents out-of-bounds write
A vulnerability, which was classified as problematic, has been found in GNU Binutils 2.45. Affected by this issue is the function bfd_elf_set_group_contents of the file bfd/elf.c. The manipulation leads to out-of-bounds write. It is possible to launch the att…
-
Medium 5.3CVE-2025-7545 Public exploit
GNU Binutils objcopy.c copy_section heap-based overflow
A vulnerability classified as problematic was found in GNU Binutils 2.45. Affected by this vulnerability is the function copy_section of the file binutils/objcopy.c. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirement. The…
-
High 8.8
Tenda AC1206 setMacFilterCfg formSetMacFilterCfg stack-based overflow
A vulnerability was found in Tenda AC1206 15.03.06.23. It has been rated as critical. This issue affects the function formSetMacFilterCfg of the file /goform/setMacFilterCfg. The manipulation of the argument deviceList leads to stack-based buffer overflow. Th…
-
High 8.8
Tenda FH1202 webExcptypemanFilter fromwebExcptypemanFilter stack-based overflow
A vulnerability has been found in Tenda FH1202 1.2.0.14(408) and classified as critical. This vulnerability affects the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. The manipulation of the argument page leads to stack-based buff…
-
High 8.8
Tenda FH1202 PPTPUserSetting fromPptpUserSetting stack-based overflow
A vulnerability, which was classified as critical, was found in Tenda FH1202 1.2.0.14(408). This affects the function fromPptpUserSetting of the file /goform/PPTPUserSetting. The manipulation of the argument delno leads to stack-based buffer overflow. It is p…
-
High 8.8
Tenda FH1202 PPTPDClient fromPptpUserAdd stack-based overflow
A vulnerability, which was classified as critical, has been found in Tenda FH1202 1.2.0.14(408). Affected by this issue is the function fromPptpUserAdd of the file /goform/PPTPDClient. The manipulation of the argument Username leads to stack-based buffer over…
-
High 8.8
Tenda FH1202 Natlimit fromNatlimit stack-based overflow
A vulnerability classified as critical was found in Tenda FH1202 1.2.0.14(408). Affected by this vulnerability is the function fromNatlimit of the file /goform/Natlimit. The manipulation of the argument page leads to stack-based buffer overflow. The attack ca…
-
High 8.8
Tenda FH1202 GstDhcpSetSer fromGstDhcpSetSer stack-based overflow
A vulnerability classified as critical has been found in Tenda FH1202 1.2.0.14(408). Affected is the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer. The manipulation of the argument dips leads to stack-based buffer overflow. It is possible to la…
-
High 8.8
Tenda FH1202 AdvSetWan fromAdvSetWan stack-based overflow
A vulnerability was found in Tenda FH1202 1.2.0.14(408). It has been rated as critical. This issue affects the function fromAdvSetWan of the file /goform/AdvSetWan. The manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. The attac…
-
High 8.8
Tenda FH451 HTTP POST Request Natlimit fromNatlimit stack-based overflow
A vulnerability classified as critical was found in Tenda FH451 1.0.0.9. Affected by this vulnerability is the function fromNatlimit of the file /goform/Natlimit of the component HTTP POST Request Handler. The manipulation of the argument page leads to stack-…
-
High 8.8
Tenda FH451 HTTP POST Request L7Prot frmL7ProtForm stack-based overflow
A vulnerability classified as critical has been found in Tenda FH451 1.0.0.9. Affected is the function frmL7ProtForm of the file /goform/L7Prot of the component HTTP POST Request Handler. The manipulation of the argument page leads to stack-based buffer overf…
-
High 8.8
Tenda FH1201 HTTP POST Request fromSafeUrlFilter buffer overflow
A vulnerability has been found in Tenda FH1201 1.2.0.14 and classified as critical. This vulnerability affects the function fromSafeUrlFilter of the file /goform/fromSafeUrlFilter of the component HTTP POST Request Handler. The manipulation of the argument pa…
-
High 8.8
Tenda FH1201 HTTP POST Request fromRouteStatic buffer overflow
A vulnerability classified as critical was found in Tenda FH1201 1.2.0.14. Affected by this vulnerability is the function fromRouteStatic of the file /goform/fromRouteStatic of the component HTTP POST Request Handler. The manipulation of the argument page lea…
-
Low 3.7
osrg GoBGP rtr.go SplitRTR out-of-bounds
A vulnerability classified as problematic has been found in osrg GoBGP up to 3.37.0. Affected is the function SplitRTR of the file pkg/packet/rtr/rtr.go. The manipulation leads to out-of-bounds read. It is possible to launch the attack remotely. The complexit…
-
High 8.8
Tenda FH1201 HTTP POST Request AdvSetWrlsafeset formWrlsafeset buffer overflow
A vulnerability was found in Tenda FH1201 1.2.0.14. It has been declared as critical. This vulnerability affects the function formWrlsafeset of the file /goform/AdvSetWrlsafeset of the component HTTP POST Request Handler. The manipulation of the argument mit_…