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 7.3
PCMan FTP Server MGET Command buffer overflow
A vulnerability was found in PCMan FTP Server 2.0.7. It has been classified as critical. This affects an unknown part of the component MGET Command Handler. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit…
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High 7.3
PCMan FTP Server MDELETE Command buffer overflow
A vulnerability was found in PCMan FTP Server 2.0.7 and classified as critical. Affected by this issue is some unknown functionality of the component MDELETE Command Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. The …
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High 7.3
PCMan FTP Server MDIR Command buffer overflow
A vulnerability has been found in PCMan FTP Server 2.0.7 and classified as critical. Affected by this vulnerability is an unknown functionality of the component MDIR Command Handler. The manipulation leads to buffer overflow. The attack can be launched remote…
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High 7.3
PCMan FTP Server QUOTE Command buffer overflow
A vulnerability classified as critical was found in PCMan FTP Server 2.0.7. This vulnerability affects unknown code of the component QUOTE Command Handler. The manipulation leads to buffer overflow. The attack can be initiated remotely. The exploit has been d…
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High 7.3
PCMan FTP Server RECV Command buffer overflow
A vulnerability classified as critical has been found in PCMan FTP Server 2.0.7. This affects an unknown part of the component RECV Command Handler. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has bee…
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High 7.3
PCMan FTP Server BELL Command buffer overflow
A vulnerability was found in PCMan FTP Server 2.0.7. It has been rated as critical. Affected by this issue is some unknown functionality of the component BELL Command Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. The…
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High 7.3
PCMan FTP Server SEND Command buffer overflow
A vulnerability was found in PCMan FTP Server 2.0.7. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component SEND Command Handler. The manipulation leads to buffer overflow. The attack can be launched remo…
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High 7.3
PCMan FTP Server TRACE Command buffer overflow
A vulnerability was found in PCMan FTP Server 2.0.7. It has been classified as critical. Affected is an unknown function of the component TRACE Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The explo…
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High 7.3
PCMan FTP Server ASCII Command buffer overflow
A vulnerability classified as critical was found in PCMan FTP Server up to 2.0.7. This vulnerability affects unknown code of the component ASCII Command Handler. The manipulation leads to buffer overflow. The attack can be initiated remotely. The exploit has …
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High 7.3
PCMan FTP Server VERBOSE Command buffer overflow
A vulnerability classified as critical has been found in PCMan FTP Server up to 2.0.7. This affects an unknown part of the component VERBOSE Command Handler. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploi…
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High 7.3
PCMan FTP Server LS Command buffer overflow
A vulnerability was found in PCMan FTP Server up to 2.0.7. It has been rated as critical. Affected by this issue is some unknown functionality of the component LS Command Handler. The manipulation leads to buffer overflow. The attack may be launched remotely.…
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High 7.3
PCMan FTP Server GLOB Command buffer overflow
A vulnerability was found in PCMan FTP Server up to 2.0.7. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component GLOB Command Handler. The manipulation leads to buffer overflow. The attack can be launche…
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High 7.3
PCMan FTP Server PROMPT Command buffer overflow
A vulnerability was found in PCMan FTP Server up to 2.0.7. It has been classified as critical. Affected is an unknown function of the component PROMPT Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. Th…
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High 8.8
Netgear EX6200 sub_54340 buffer overflow
A vulnerability was found in Netgear EX6200 1.0.3.94. It has been declared as critical. This vulnerability affects the function sub_54340. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. The vendor was con…
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High 8.8
Netgear EX6200 sub_54014 buffer overflow
A vulnerability was found in Netgear EX6200 1.0.3.94. It has been classified as critical. This affects the function sub_54014. The manipulation of the argument host leads to buffer overflow. It is possible to initiate the attack remotely. The vendor was conta…
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High 8.8
Netgear EX6200 sub_503FC buffer overflow
A vulnerability was found in Netgear EX6200 1.0.3.94 and classified as critical. Affected by this issue is the function sub_503FC. The manipulation of the argument host leads to buffer overflow. The attack may be launched remotely. The vendor was contacted ea…
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High 8.8
Netgear EX6200 sub_47F7C buffer overflow
A vulnerability has been found in Netgear EX6200 1.0.3.94 and classified as critical. Affected by this vulnerability is the function sub_47F7C. The manipulation of the argument host leads to buffer overflow. The attack can be launched remotely. The vendor was…
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High 8.8
Netgear EX6200 sub_41940 buffer overflow
A vulnerability, which was classified as critical, was found in Netgear EX6200 1.0.3.94. Affected is the function sub_41940. The manipulation of the argument host leads to buffer overflow. It is possible to launch the attack remotely. The vendor was contacted…
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High 8.8
Netgear EX6200 sub_3D0BC buffer overflow
A vulnerability, which was classified as critical, has been found in Netgear EX6200 1.0.3.94. This issue affects the function sub_3D0BC. The manipulation of the argument host leads to buffer overflow. The attack may be initiated remotely. The vendor was conta…
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High 8.8
Netgear EX6200 sub_3C8EC buffer overflow
A vulnerability has been found in Netgear EX6200 1.0.3.94 and classified as critical. This vulnerability affects the function sub_3C8EC. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. The vendor was conta…
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High 8.8
Netgear EX6200 sub_3C03C buffer overflow
A vulnerability, which was classified as critical, was found in Netgear EX6200 1.0.3.94. This affects the function sub_3C03C. The manipulation of the argument host leads to buffer overflow. It is possible to initiate the attack remotely. The vendor was contac…
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High 8.8
Netgear EX6120 sub_30394 buffer overflow
A vulnerability, which was classified as critical, has been found in Netgear EX6120 1.0.3.94. Affected by this issue is the function sub_30394. The manipulation of the argument host leads to buffer overflow. The attack may be launched remotely. The vendor was…
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High 8.8
Netgear EX6120 fwAcosCgiInbound buffer overflow
A vulnerability classified as critical was found in Netgear EX6120 1.0.0.68. Affected by this vulnerability is the function fwAcosCgiInbound. The manipulation of the argument host leads to buffer overflow. The attack can be launched remotely. The vendor was c…
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High 8.8
Netgear JWNR2000v2 sub_4238E8 buffer overflow
A vulnerability was found in Netgear JWNR2000v2 1.0.0.11. It has been classified as critical. Affected is the function sub_4238E8. The manipulation of the argument host leads to buffer overflow. It is possible to launch the attack remotely. The vendor was con…
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High 8.8
Netgear JWNR2000v2 get_cur_lang_ver buffer overflow
A vulnerability, which was classified as critical, has been found in Netgear JWNR2000v2 1.0.0.11. Affected by this issue is the function get_cur_lang_ver. The manipulation of the argument host leads to buffer overflow. The attack may be launched remotely. The…
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High 8.8
Netgear JWNR2000v2 default_version_is_new buffer overflow
A vulnerability classified as critical was found in Netgear JWNR2000v2 1.0.0.11. Affected by this vulnerability is the function default_version_is_new. The manipulation of the argument host leads to buffer overflow. The attack can be launched remotely. The ve…
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High 8.8
Netgear JWNR2000v2 check_language_file buffer overflow
A vulnerability classified as critical has been found in Netgear JWNR2000v2 1.0.0.11. Affected is the function check_language_file. The manipulation of the argument host leads to buffer overflow. It is possible to launch the attack remotely. The vendor was co…
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High 7.3
PCMan FTP Server RENAME Command buffer overflow
A vulnerability, which was classified as critical, was found in PCMan FTP Server up to 2.0.7. Affected is an unknown function of the component RENAME Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The…
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High 8.1
Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10
Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 128.1…
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High 8.1
Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10
Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. 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.…
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High 8.8
Tenda W12/i24 httpd modules cgidhcpsCfgSet stack-based overflow
A vulnerability classified as critical was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644). Affected by this vulnerability is the function cgidhcpsCfgSet of the file /goform/modules of the component httpd. The manipulation of the argument json leads to…
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High 8.8
TOTOLINK N150RT formWsc buffer overflow
A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525 and classified as critical. This issue affects some unknown processing of the file /boafrm/formWsc. The manipulation of the argument submit-url leads to buffer overflow. The attack may be initiated …
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High 8.8
TOTOLINK N150RT formWlwds buffer overflow
A vulnerability has been found in TOTOLINK N150RT 3.4.0-B20190525 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formWlwds. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initia…
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High 8.8
TOTOLINK N150RT formWdsEncrypt buffer overflow
A vulnerability, which was classified as critical, was found in TOTOLINK N150RT 3.4.0-B20190525. This affects an unknown part of the file /boafrm/formWdsEncrypt. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiate …
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High 8.8
TOTOLINK N150RT formVlan buffer overflow
A vulnerability, which was classified as critical, has been found in TOTOLINK N150RT 3.4.0-B20190525. Affected by this issue is some unknown functionality of the file /boafrm/formVlan. The manipulation of the argument submit-url leads to buffer overflow. The …
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High 8.8
TOTOLINK N150RT formStaticDHCP buffer overflow
A vulnerability classified as critical was found in TOTOLINK N150RT 3.4.0-B20190525. Affected by this vulnerability is an unknown functionality of the file /boafrm/formStaticDHCP. The manipulation of the argument Hostname leads to buffer overflow. The attack …
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High 8.8
TOTOLINK N150RT formPortFw buffer overflow
A vulnerability classified as critical has been found in TOTOLINK N150RT 3.4.0-B20190525. Affected is an unknown function of the file /boafrm/formPortFw. The manipulation of the argument service_type leads to buffer overflow. It is possible to launch the atta…
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High 8.0
GL.iNet GL-A1300 Slate Plus RPC plugins.so buffer overflow
A vulnerability classified as critical has been found in GL.iNet GL-A1300 Slate Plus, GL-AR300M16 Shadow, GL-AR300M Shadow, GL-AR750 Creta, GL-AR750S-EXT Slate, GL-AX1800 Flint, GL-AXT1800 Slate AX, GL-B1300 Convexa-B, GL-B3000 Marble, GL-BE3600 Slate 7, GL-E…
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High 7.3
z2d OOB composition could lead to invalid memory access and corruption
z2d is a pure Zig 2D graphics library. Versions of z2d after `0.5.1` and up to and including `0.6.0`, when writing from one surface to another using `z2d.compositor.StrideCompositor.run`, and higher-level operations when the anti-aliasing mode is set to `.def…
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High 8.0
H3C GR-3000AX HTTP POST Request aspForm Edit_List_SSID buffer overflow
A vulnerability, which was classified as critical, was found in H3C GR-3000AX up to V100R006. Affected is the function EnableIpv6/UpdateWanModeMulti/UpdateIpv6Params/EditWlanMacList/Edit_List_SSID of the file /goform/aspForm of the component HTTP POST Request…