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QuickJS

7 known vulnerabilities.

QuickJS at a glance

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Products

7 results · Feed

  • High 7.1

    Integer overflow in js_bigint_from_string in QuickJS

    A vulnerability exists in the QuickJS engine's BigInt string parsing logic (js_bigint_from_string) when attempting to create a BigInt from a string with an excessively large number of digits. The function calculates the necessary number of bits (n_bits) requi…

  • High 7.1

    Type confusion in string addition in QuickJS

    An integer overflow vulnerability exists in the QuickJS regular expression engine (libregexp) due to an inconsistent representation of the bytecode buffer size. * The regular expression bytecode is stored in a DynBuf structure, which correctly uses a $\text{s…

  • High 7.1

    Type confusion in string addition in QuickJS

    A type confusion vulnerability exists in the handling of the string addition (+) operation within the QuickJS engine. * The code first checks if the left-hand operand is a string. * It then attempts to convert the right-hand operand to a primitive value using…

  • Medium 5.9

    Heap out-of-bounds read in js_bigint_to_string1 in QuickJS

    A vulnerability exists in the QuickJS engine's BigInt string conversion logic (js_bigint_to_string1) due to an incorrect calculation of the required number of digits, which in turn leads to reading memory past the allocated BigInt structure. * The function de…

  • Medium 5.9

    Heap out-of-bounds read in js_typed_array_indexOf in QuickJS

    A vulnerability stemming from floating-point arithmetic precision errors exists in the QuickJS engine's implementation of TypedArray.prototype.indexOf() when a negative fromIndex argument is supplied. * The fromIndex argument (read as a double variable, $d$) …

  • High 8.8

    Use-after-free in js_std_promise_rejection_check in QuickJS

    A Use-After-Free (UAF) vulnerability exists in the QuickJS engine's standard library when iterating over the global list of unhandled rejected promises (ts->rejected_promise_list). * The function js_std_promise_rejection_check attempts to iterate over the rej…

  • High 8.8

    Use-after-free in js_print_object in QuickJS

    In quickjs, in js_print_object, when printing an array, the function first fetches the array length and then loops over it. The issue is, printing a value is not side-effect free. An attacker-defined callback could run during js_print_value, during which the …