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
3,721 results · Feed
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High 8.8
Tenda F456 httpd WrlclientSet fromWrlclientSet buffer overflow
A vulnerability has been found in Tenda F456 1.0.0.5. This affects the function fromWrlclientSet of the file /goform/WrlclientSet of the component httpd. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has…
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High 8.8
Tenda F456 httpd Natlimit fromNatlimitof buffer overflow
A flaw has been found in Tenda F456 1.0.0.5. The impacted element is the function fromNatlimitof of the file /goform/Natlimit of the component httpd. Executing a manipulation can lead to buffer overflow. The attack may be launched remotely. The exploit has be…
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High 8.8
Tenda F456 httpd QuickIndex formQuickIndex buffer overflow
A vulnerability was detected in Tenda F456 1.0.0.5. The affected element is the function formQuickIndex of the file /goform/QuickIndex of the component httpd. Performing a manipulation of the argument mit_linktype results in buffer overflow. The attack may be…
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High 8.8
Tenda F456 httpd DhcpListClient fromDhcpListClient buffer overflow
A security vulnerability has been detected in Tenda F456 1.0.0.5. Impacted is the function fromDhcpListClient of the file /goform/DhcpListClient of the component httpd. Such manipulation of the argument page leads to buffer overflow. The attack can be launche…
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High 8.8
Tenda F456 httpd webExcptypemanFilter fromwebExcptypemanFilter buffer overflow
A weakness has been identified in Tenda F456 1.0.0.5. This issue affects the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter of the component httpd. This manipulation of the argument page causes buffer overflow. The attack can be in…
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High 8.8
Tenda F456 httpd WrlExtraSet formWrlExtraSet buffer overflow
A flaw has been found in Tenda F456 1.0.0.5. Affected by this vulnerability is the function formWrlExtraSet of the file /goform/WrlExtraSet of the component httpd. Executing a manipulation of the argument Go can lead to buffer overflow. The attack can be exec…
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High 8.8
Tenda F456 httpd GstDhcpSetSer fromGstDhcpSetSer buffer overflow
A vulnerability was detected in Tenda F456 1.0.0.5. Affected is the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer of the component httpd. Performing a manipulation of the argument dips results in buffer overflow. Remote exploitation of the atta…
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High 8.8
Tenda F456 httpd PPTPUserSetting fromPPTPUserSetting buffer overflow
A security vulnerability has been detected in Tenda F456 1.0.0.5. This impacts the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. Such manipulation of the argument delno leads to buffer overflow. The attack may be lau…
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High 8.8
Tenda F456 httpd AdvSetWan fromAdvSetWan buffer overflow
A weakness has been identified in Tenda F456 1.0.0.5. This affects the function fromAdvSetWan of the file /goform/AdvSetWan of the component httpd. This manipulation of the argument wanmode causes buffer overflow. The attack may be initiated remotely. The exp…
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High 8.8
Tenda F456 httpd SetIpBind fromSetIpBind buffer overflow
A security flaw has been discovered in Tenda F456 1.0.0.5. The impacted element is the function fromSetIpBind of the file /goform/SetIpBind of the component httpd. The manipulation of the argument page results in buffer overflow. The attack can be launched re…
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High 8.0
D-Link DIR-825 miniupnpd upnpsoap.c AddPortMapping buffer overflow
A security flaw has been discovered in D-Link DIR-825 up to 3.00b32. This impacts the function AddPortMapping of the file upnpsoap.c of the component miniupnpd. Performing a manipulation of the argument NewPortMappingDescription results in buffer overflow. Th…
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High 8.8
D-Link DIR-825 nmbd sserver.c NMBD_process buffer overflow
A vulnerability was identified in D-Link DIR-825 3.00b32. This affects the function NMBD_process of the file sserver.c of the component nmbd. Such manipulation leads to buffer overflow. The attack can only be initiated within the local network. The exploit is…
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High 8.8
Tenda F456 httpd setcfm buffer overflow
A flaw has been found in Tenda F456 1.0.0.5. The affected element is an unknown function of the file /goform/setcfm of the component httpd. This manipulation of the argument funcname/funcpara1 causes buffer overflow. It is possible to initiate the attack remo…
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High 8.8
Tenda F456 httpd SafeUrlFilter fromSafeUrlFilter buffer overflow
A vulnerability was detected in Tenda F456 1.0.0.5. Impacted is the function fromSafeUrlFilter of the file /goform/SafeUrlFilter of the component httpd. The manipulation of the argument page results in buffer overflow. The attack may be performed from remote.…
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High 8.8
Tenda F456 httpd VirtualSer fromVirtualSer buffer overflow
A security vulnerability has been detected in Tenda F456 1.0.0.5. This issue affects the function fromVirtualSer of the file /goform/VirtualSer of the component httpd. The manipulation of the argument menufacturer/Go leads to buffer overflow. The attack is po…
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High 8.8
Tenda F456 httpd PPTPDClient fromPptpUserAdd buffer overflow
A weakness has been identified in Tenda F456 1.0.0.5. This vulnerability affects the function fromPptpUserAdd of the file /goform/PPTPDClient of the component httpd. Executing a manipulation of the argument opttype/usernamewith can lead to buffer overflow. Th…
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High 8.8
Tenda F456 httpd L7Prot frmL7ProtForm buffer overflow
A security flaw has been discovered in Tenda F456 1.0.0.5. This affects the function frmL7ProtForm of the file /goform/L7Prot of the component httpd. Performing a manipulation of the argument page results in buffer overflow. Remote exploitation of the attack …
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High 8.8
Tenda FH1202 httpd WrlclientSet fromWrlclientSet stack-based overflow
A vulnerability was determined in Tenda FH1202 1.2.0.14. This affects the function fromWrlclientSet of the file /goform/WrlclientSet of the component httpd. Executing a manipulation of the argument Go can lead to stack-based buffer overflow. The attack may be…
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High 8.8
Tenda FH1202 httpd WrlExtraSet stack-based overflow
A vulnerability was found in Tenda FH1202 1.2.0.14(408). Affected by this issue is the function WrlExtraSet of the file /goform/WrlExtraSet of the component httpd. Performing a manipulation of the argument Go results in stack-based buffer overflow. The attack…
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High 8.8
Tenda F456 SafeClientFilter fromSafeClientFilter buffer overflow
A vulnerability has been found in Tenda F456 1.0.0.5. Affected by this vulnerability is the function fromSafeClientFilter of the file /goform/SafeClientFilter. Such manipulation of the argument menufacturer/Go leads to buffer overflow. The attack can be launc…
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High 8.8
Tenda F456 SafeEmailFilter buffer overflow
A flaw has been found in Tenda F456 1.0.0.5. Affected is the function SafeEmailFilter of the file /goform/SafeEmailFilter. This manipulation of the argument page causes buffer overflow. The attack can be initiated remotely. The exploit has been published and …
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High 8.8
Tenda F456 SafeMacFilter fromSafeMacFilter buffer overflow
A vulnerability was detected in Tenda F456 1.0.0.5. This impacts the function fromSafeMacFilter of the file /goform/SafeMacFilter. The manipulation of the argument page results in buffer overflow. It is possible to launch the attack remotely. The exploit is n…
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High 8.8
Tenda F456 RouteStatic fromRouteStatic buffer overflow
A security vulnerability has been detected in Tenda F456 1.0.0.5. This affects the function fromRouteStatic of the file /goform/RouteStatic. The manipulation of the argument page leads to buffer overflow. It is possible to initiate the attack remotely. The ex…
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High 8.8
Tenda F456 addressNat fromaddressNat buffer overflow
A weakness has been identified in Tenda F456 1.0.0.5. The impacted element is the function fromaddressNat of the file /goform/addressNat. Executing a manipulation of the argument menufacturer/Go can lead to buffer overflow. The attack may be performed from re…
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High 8.8
Tenda F456 P2pListFilter fromP2pListFilter buffer overflow
A vulnerability was identified in Tenda F456 1.0.0.5. The impacted element is the function fromP2pListFilter of the file /goform/P2pListFilter. The manipulation of the argument menufacturer/Go leads to buffer overflow. The attack is possible to be carried out…
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High 8.8
Tenda HG10 Boa Service formRouting formRoute buffer overflow
A flaw has been found in Tenda HG10 HG7_HG9_HG10re_300001138_en_xpon. This issue affects the function formRoute of the file /boaform/formRouting of the component Boa Service. This manipulation of the argument nextHop causes buffer overflow. It is possible to …
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Medium 5.3
Other issue in the JavaScript Engine component
Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
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High 7.8
Incorrect boundary conditions in the WebRTC: Networking component
Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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Medium 5.3
Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
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Medium 5.3
Other issue in the Libraries component in NSS
Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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Medium 6.5
Incorrect boundary conditions in the DOM: Device Interfaces component
Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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High 7.3
Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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High 7.3
Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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High 8.8
Tenda F451 httpd SafeClientFilter fromSafeClientFilter buffer overflow
A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958. The affected element is the function fromSafeClientFilter of the file /goform/SafeClientFilter of the component httpd. The manipulation of the argument menufacturer/Go leads to buffer overflow. …
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High 8.8
Tenda F451 httpd webExcptypemanFilter fromwebExcptypemanFilter buffer overflow
A vulnerability was determined in Tenda F451 1.0.0.7_cn_svn7958. Impacted is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The …
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High 8.8
Tenda F451 httpd GstDhcpSetSer fromGstDhcpSetSer buffer overflow
A vulnerability was found in Tenda F451 1.0.0.7_cn_svn7958. This issue affects the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer of the component httpd. Performing a manipulation of the argument dips results in buffer overflow. The attack may b…
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High 8.8
H3C Magic B1 aspForm SetMobileAPInfoById buffer overflow
A vulnerability was detected in H3C Magic B1 up to 100R004. Affected by this vulnerability is the function SetMobileAPInfoById of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. Remote exploitation of the …
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High 8.8
H3C Magic B1 aspForm SetAPWifiorLedInfoById buffer overflow
A vulnerability has been found in H3C Magic B1 up to 100R004. The affected element is the function SetAPWifiorLedInfoById of the file /goform/aspForm. The manipulation of the argument param leads to buffer overflow. It is possible to initiate the attack remot…
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High 8.8
H3C Magic B0 aspForm Edit_BasicSSID buffer overflow
A security vulnerability has been detected in H3C Magic B0 up to 100R002. This vulnerability affects the function Edit_BasicSSID of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack can be executed remotely…
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High 8.2
Firebird has Pre-Auth DOS when Processing Out of Order CNCT_specific_data Segments
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when processing CNCT_specific_data segments during authentication, the server assumes segments arrive in strictly ascending order. If segments arri…