Moddable
CVE-2020-25464
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
Heap buffer overflow at moddable/xs/sources/xsDebug.c in Moddable SDK before before 20200903. The top stack frame is only partially initialized because the stack overflowed while creating the frame. This leads to a crash in the code sending the stack frame to the debugger.
AnalysisAI
Heap buffer overflow at moddable/xs/sources/xsDebug.c in Moddable SDK before before 20200903. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Heap buffer overflow at moddable/xs/sources/xsDebug.c in Moddable SDK before before 20200903. The top stack frame is only partially initialized because the stack overflowed while creating the frame. This leads to a crash in the code sending the stack frame to the debugger. Affected products include: Moddable. Version information: before 20200903..
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).
Heap buffer overflow in the fxCheckArrowFunction function at moddable/xs/sources/xsSyntaxical.c:3562 in Moddable SDK bef
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OpenSource Moddable v10.5.0 was discovered to contain a heap buffer overflow in the fx_ArrayBuffer function at /moddable
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OpenSource Moddable v10.5.0 was discovered to contain a heap buffer overflow in the fx_String_prototype_repeat function
OpenSource Moddable v10.5.0 was discovered to contain a stack overflow via the component /moddable/xs/sources/xsScript.c
Null Pointer Dereference. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication
Invalid Memory Access in fxUTF8Decode at moddable/xs/sources/xsCommon.c:916 in Moddable SDK before OS200908 causes a den
Invalid Memory Access in the fxProxyGetter function in moddable/xs/sources/xsProxy.c in Moddable SDK before OS200908 cau
Moddable commit before 135aa9a4a6a9b49b60aa730ebc3bcc6247d75c45 was discovered to contain an out-of-bounds read via the
OpenSource Moddable v10.5.0 was discovered to contain buffer over-read in the fxDebugThrow function at /moddable/xs/sour
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
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