Vulnerabilities

A type confusion in jsish 2.0 allows incorrect control flow during execution of the OP_NEXT opcode. When an “instanceof” expression uses an array element access as the left-hand operand inside a for-in loop, the instructions implementation leaves an additional array reference on the stack rather than consuming it during OP_INSTANCEOF. As a result, OP_NEXT interprets the array as an iterator object and reads the iterCmd function pointer from an invalid structure, potentially causing a crash or enabling code execution depending on heap layout.

Jsish v3.5.0 (commit 42c694c) was discovered to contain a stack-overflow via the component IterGetKeysCallback at /jsish/src/jsiValue.c.

An issue found in Jsish v.3.0.11 allows a remote attacker to cause a denial of service via the Jsi_ValueIsNumber function in ./src/jsiValue.c file.

Jsish v3.5.0 was discovered to contain a heap-use-after-free via /usr/lib/x86_64-linux-gnu/libasan.so.4+0x5166d. This vulnerability can lead to a Denial of Service (DoS).

Jsish v3.5.0 was discovered to contain a heap buffer overflow via BooleanConstructor at src/jsiBool.c.

Integer overflow vulnerability in function Jsi_ObjSetLength in jsish before 3.0.6, allows remote attackers to execute arbitrary code.

Jsish 2.4.84 2.0484 is affected by: Uncontrolled Resource Consumption. The impact is: denial of service. The component is: function jsiValueGetString (jsiUtils.c). The attack vector is: executing crafted javascript code. The fixed version is: after commit f3a8096e0ce44bbf36c1dcb6e603adf9c8670c39.

Jsish 2.4.70 2.047 is affected by: Use After Free. The impact is: denial of service and possibly arbitrary code execution. The component is: function Jsi_RegExpNew (jsi/jsiRegexp.c:39). The attack vector is: executing crafted javascript code. The fixed version is: after commit 48a66c798d.

Jsish 2.4.77 2.0477 is affected by: Out-of-bounds Read. The impact is: denial of service. The component is: function lexer_getchar (jsiLexer.c:9). The attack vector is: executing crafted javascript code. The fixed version is: 2.4.78.

jsish version 2.4.70 2.047 contains a CWE-125: Out-of-bounds Read vulnerability in function jsi_ObjArrayLookup (jsiObj.c:274) that can result in Crash due to segmentation fault. This attack appear to be exploitable via The victim must execute crafted javascript code. This vulnerability appears to have been fixed in 2.4.71.