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)
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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-119
2,176 results · Clear filters · Feed
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High 8.8
Tenda AX1803 WifiGuestSet fromGetWifiGuestBasic stack-based overflow
A flaw has been found in Tenda AX1803 1.0.0.1. The affected element is the function fromGetWifiGuestBasic of the file /goform/WifiGuestSet. Executing a manipulation of the argument guestWrlPwd/guestEn/guestSsid/hideSsid/guestSecurity can lead to stack-based b…
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High 8.8
Totolink NR1800X POST Request cstecgi.cgi setWizardCfg buffer overflow
A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. Impacted is the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in buffer overflow. Th…
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High 8.8
Totolink LR350 POST Request cstecgi.cgi setWizardCfg buffer overflow
A security flaw has been discovered in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in…
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High 8.8
Totolink LR350 cstecgi.cgi setWiFiEasyCfg buffer overflow
A vulnerability was identified in Totolink LR350 9.3.5u.6369_B20220309. This affects the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument ssid leads to buffer overflow. It is possible to launch the attack remotely. T…
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High 8.8
Totolink LR350 cstecgi.cgi setWiFiBasicCfg buffer overflow
A vulnerability was determined in Totolink LR350 9.3.5u.6369_B20220309. Affected by this issue is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ssid causes buffer overflow. It is possible to initiate the atta…
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High 8.8
Totolink LR350 cstecgi.cgi setWiFiEasyGuestCfg buffer overflow
A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. Affected by this vulnerability is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack may be perform…
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High 8.8
TOTOLINK A3700R cstecgi.cgi setWiFiEasyGuestCfg buffer overflow
A weakness has been identified in TOTOLINK A3700R 9.1.2u.5822_B20200513. This affects the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument ssid can lead to buffer overflow. The attack may be launched remo…
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High 8.8
UTT 进取 520W ConfigExceptAli strcpy buffer overflow
A vulnerability was found in UTT 进取 520W 1.7.7-180627. This issue affects the function strcpy of the file /goform/ConfigExceptAli. The manipulation results in buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and …
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High 8.8
UTT 进取 520W ConfigExceptMSN strcpy buffer overflow
A vulnerability has been found in UTT 进取 520W 1.7.7-180627. This vulnerability affects the function strcpy of the file /goform/ConfigExceptMSN. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been dis…
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High 8.8
UTT 进取 520W ConfigExceptQQ strcpy buffer overflow
A flaw has been found in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/ConfigExceptQQ. Executing a manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been published and may be us…
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High 8.8
UTT 进取 520W formWebAuthGlobalConfig strcpy buffer overflow
A vulnerability was detected in UTT 进取 520W 1.7.7-180627. Affected by this issue is the function strcpy of the file /goform/formWebAuthGlobalConfig. Performing a manipulation results in buffer overflow. The attack is possible to be carried out remotely. The e…
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High 7.8
The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.1 and iPadOS 18.1, macOS Sequoia 15.…
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High 8.1
Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147
Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. 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 co…
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High 8.0
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
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High 8.8
UTT 进取 520W formPictureUrl strcpy buffer overflow
A vulnerability was detected in UTT 进取 520W 1.7.7-180627. Affected by this issue is the function strcpy of the file /goform/formPictureUrl. The manipulation of the argument importpictureurl results in buffer overflow. It is possible to launch the attack remot…
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High 8.8
UTT 进取 520W formConfigNoticeConfig strcpy buffer overflow
A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. Affected by this vulnerability is the function strcpy of the file /goform/formConfigNoticeConfig. The manipulation of the argument timestart leads to buffer overflow. It is possible to in…
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High 8.8
UTT 进取 520W APSecurity strcpy buffer overflow
A weakness has been identified in UTT 进取 520W 1.7.7-180627. Affected is the function strcpy of the file /goform/APSecurity. Executing a manipulation of the argument wepkey1 can lead to buffer overflow. The attack may be performed from remote. The exploit has …
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High 8.8
UTT 进取 520W ConfigWirelessBase strcpy buffer overflow
A security flaw has been discovered in UTT 进取 520W 1.7.7-180627. This impacts the function strcpy of the file /goform/ConfigWirelessBase. Performing a manipulation of the argument ssid results in buffer overflow. The attack is possible to be carried out remot…
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High 8.8
UTT 进取 520W formFireWall strcpy buffer overflow
A vulnerability was identified in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/formFireWall. Such manipulation of the argument GroupName leads to buffer overflow. The attack can be executed remotely. The exploit is publicly a…
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High 8.8
UTT 进取 520W formConfigFastDirectionW strcpy buffer overflow
A vulnerability was determined in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formConfigFastDirectionW. This manipulation of the argument ssid causes buffer overflow. Remote exploitation of the attack is possible.…
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High 7.3
quickjs-ng quickjs quickjs.c js_typed_array_constructor heap-based overflow
A vulnerability was determined in quickjs-ng quickjs up to 0.11.0. This vulnerability affects the function js_typed_array_constructor of the file quickjs.c. Executing a manipulation can lead to heap-based buffer overflow. The attack may be launched remotely. …
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High 8.8
Tenda AC23 PowerSaveSet sscanf buffer overflow
A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been m…
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High 8.8
UTT 进取 520W ConfigAdvideo strcpy buffer overflow
A vulnerability has been found in UTT 进取 520W 1.7.7-180627. This issue affects the function strcpy of the file /goform/ConfigAdvideo. The manipulation of the argument timestart leads to buffer overflow. The attack is possible to be carried out remotely. The e…
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High 8.8
UTT 进取 520W formTaskEdit strcpy buffer overflow
A flaw has been found in UTT 进取 520W 1.7.7-180627. This vulnerability affects the function strcpy of the file /goform/formTaskEdit. Executing a manipulation of the argument selDateType can lead to buffer overflow. The attack can be executed remotely. The expl…
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High 8.8
UTT 进取 520W formPptpClientConfig strcpy buffer overflow
A vulnerability was detected in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/formPptpClientConfig. Performing a manipulation of the argument EncryptionMode results in buffer overflow. Remote exploitation of the attack is poss…
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High 8.8
UTT 进取 520W formUser strcpy buffer overflow
A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. Affected by this issue is the function strcpy of the file /goform/formUser. Such manipulation of the argument passwd1 leads to buffer overflow. The attack may be launched remotely. The ex…
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High 8.8
UTT 进取 512W formFtpServerDirConfig strcpy buffer overflow
A flaw has been found in UTT 进取 512W 1.7.7-171114. This affects the function strcpy of the file /goform/formFtpServerDirConfig. Executing a manipulation of the argument filename can lead to buffer overflow. The attack can be launched remotely. The exploit has…
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High 8.8
UTT 进取 512W formFtpServerShareDirSelcet strcpy buffer overflow
A vulnerability was detected in UTT 进取 512W 1.7.7-171114. Affected by this issue is the function strcpy of the file /goform/formFtpServerShareDirSelcet. Performing a manipulation of the argument oldfilename results in buffer overflow. The attack can be initia…
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High 8.8
UTT 进取 512W formConfigCliForEngineerOnly strcpy buffer overflow
A security vulnerability has been detected in UTT 进取 512W 1.7.7-171114. Affected by this vulnerability is the function strcpy of the file /goform/formConfigCliForEngineerOnly. Such manipulation of the argument addCommand leads to buffer overflow. It is possib…
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High 8.8
UTT 进取 512W formRemoteControl strcpy buffer overflow
A weakness has been identified in UTT 进取 512W 1.7.7-171114. Affected is the function strcpy of the file /goform/formRemoteControl. This manipulation of the argument Profile causes buffer overflow. It is possible to initiate the attack remotely. The exploit ha…
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High 8.8
Tenda AC20 PowerSaveSet sscanf buffer overflow
A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The manipulation of the argument powerSavingEn/time/powerSaveDelay/ledCloseType leads to buffer overflow. The attack …
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High 8.8
Tenda M3 exeCommand stack-based overflow
A vulnerability has been found in Tenda M3 1.0.0.13(4903). The impacted element is an unknown function of the file /goform/exeCommand. Such manipulation of the argument cmdinput leads to stack-based buffer overflow. The attack can be launched remotely. The ex…
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High 8.8
Tenda M3 setDhcpAP formSetRemoteDhcpForAp stack-based overflow
A flaw has been found in Tenda M3 1.0.0.13(4903). The affected element is the function formSetRemoteDhcpForAp of the file /goform/setDhcpAP. This manipulation of the argument startip/endip/leasetime/gateway/dns1/dns2 causes stack-based buffer overflow. The at…
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High 7.3
gmg137 snap7-rs client.rs download heap-based overflow
A vulnerability was identified in gmg137 snap7-rs up to 153d3e8c16decd7271e2a5b2e3da4d6f68589424. Affected by this issue is the function snap7_rs::client::S7Client::download of the file client.rs. Such manipulation leads to heap-based buffer overflow. The att…
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High 8.8
Tenda M3 setInternetLanInfo formSetRemoteInternetLanInfo heap-based overflow
A weakness has been identified in Tenda M3 1.0.0.13(4903). Impacted is the function formSetRemoteInternetLanInfo of the file /goform/setInternetLanInfo. This manipulation of the argument portIp/portMask/portGateWay/portDns/portSecDns causes heap-based buffer …
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High 8.8
Tenda M3 setAdInfoDetail formSetAdInfoDetails heap-based overflow
A security flaw has been discovered in Tenda M3 1.0.0.13(4903). This issue affects the function formSetAdInfoDetails of the file /goform/setAdInfoDetail. The manipulation of the argument adName/smsPassword/smsAccount/weixinAccount/weixinName/smsSignature/adRe…
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High 8.8
Tenda M3 setAdPushInfo formSetAdPushInfo stack-based overflow
A vulnerability was identified in Tenda M3 1.0.0.13(4903). This vulnerability affects the function formSetAdPushInfo of the file /goform/setAdPushInfo. The manipulation of the argument mac/terminal leads to stack-based buffer overflow. The attack is possible …
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High 8.8
Tenda M3 setVlanInfo formSetRemoteVlanInfo stack-based overflow
A vulnerability was determined in Tenda M3 1.0.0.13(4903). This affects the function formSetRemoteVlanInfo of the file /goform/setVlanInfo. Executing a manipulation of the argument ID/vlan/port can lead to stack-based buffer overflow. The attack can be execut…
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High 8.8
Tenda M3 setVlanPolicyData formSetVlanPolicy heap-based overflow
A vulnerability was found in Tenda M3 1.0.0.13(4903). Affected by this issue is the function formSetVlanPolicy of the file /goform/setVlanPolicyData. Performing a manipulation of the argument qvlan_truck_port results in heap-based buffer overflow. Remote expl…
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High 8.8
Tenda AC10U POST Request Parameter AdvSetLanip fromadvsetlanip buffer overflow
A weakness has been identified in Tenda AC10U 15.03.06.48/15.03.06.49. Affected by this vulnerability is the function fromadvsetlanip of the file /goform/AdvSetLanip of the component POST Request Parameter Handler. Executing a manipulation of the argument lan…