Buffer overflow vulnerability in function jsvGetStringChars in Espruino before RELEASE2V09, allows remote attackers to execute arbitrary code.

An issue found in Espruino Espruino 6ea4c0a allows an attacker to execute arbitrrary code via oldFunc parameter of the jswrapobject.c:jswrapfunctionreplacewith endpoint.

Espruino 2v11.251 was discovered to contain a stack buffer overflow via src/jsvar.c in jsvNewFromString.

Espruino 2v10.246 was discovered to contain a stack buffer overflow via src/jsutils.c in vcbprintf.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Escalation of Privileges with a user crafted input file via a Buffer Overflow during syntax parsing, because strncat is misused.

Espruino 2v11 release was discovered to contain a stack buffer overflow via src/jsvar.c in jsvGetNextSibling.

Espruino 2v11.251 was discovered to contain a stack buffer overflow via src/jsvar.c in jsvNewFromString.

An out-of-bounds write vulnerability in jslGetTokenValueAsString() in Espruino 2v29 (commit bffc6d0) allows crafted JavaScript input containing an overlong token to trigger a one-byte write beyond the JsLex.token buffer in RELEASE/NOASSERT builds. The out-of-bounds write corrupts the adjacent tokenValue pointer, resulting in memory corruption and potentially causing application crashes or denial of service.

Espruino 2v20 (commit fcc9ba4) was discovered to contain an Out-of-bounds Read via jsvStringIteratorPrintfCallback at src/jsvar.c.

Espruino 2v20 (commit fcc9ba4) was discovered to contain a Stack Overflow via the jspeFactorFunctionCall at src/jsparse.c.

Buffer Overflow vulnerability found in Espruino 2v05.41 allows an attacker to cause a denial of service via the function jsvGarbageCollectMarkUsed in file src/jsvar.c.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and potential Information Disclosure with a user crafted input file via a Buffer Overflow during syntax parsing because strncpy is misused in jslex.c.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Information Disclosure with user crafted input files via a Buffer Overflow or Out-of-bounds Read during syntax parsing of certain for loops in jsparse.c.

Espruino 2v11.251 was discovered to contain a SEGV vulnerability via src/jsinteractive.c in jsiGetDeviceFromClass.

Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via a NULL pointer dereference during syntax parsing. This was addressed by adding validation for a debug trace print statement in jsvar.c.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file via a Buffer Overflow during syntax parsing of "VOID" tokens in jsparse.c.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file via an integer overflow during syntax parsing. This was addressed by fixing stack size detection on Linux in jsutils.c.

Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via an Out-of-bounds Read during syntax parsing in which certain height validation is missing in libs/graphics/jswrapgraphics.c.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file via a Buffer Overflow during syntax parsing because a check for '\0' is made for the wrong array element in jsvar.c.

Espruino before 1.99 allows attackers to cause a denial of service (application crash) with a user crafted input file via a Buffer Overflow during syntax parsing because of a missing check for stack exhaustion with many '{' characters in jsparse.c.

Espruino 2v29 (commit bffc6d0) contains a stack-based buffer overflow vulnerability in the JavaScript error stack-trace handling path on 64-bit builds. A remote attacker can supply JavaScript input that triggers an exception and reaches jslPrintTokenLineMarker(), which passes the address of a 4-byte int column variable to jsvGetLineAndCol() as a sizet pointer. jsvGetLineAndCol() performs an 8-byte write through the mismatched pointer, overwriting adjacent stack memory.