Integer Overflow in Artifex MuJS Affects Product Functionality
CVE-2018-6191

5.5MEDIUM

Key Information:

Vendor

Artifex
Status
Mujs
Vendor
CVE Published:
24 January 2018

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-6191?

The js_strtod function in the jsdtoa.c file of Artifex MuJS up to version 1.0.2 is susceptible to an integer overflow due to improper validation of exponents. This flaw can lead to unexpected behaviors or possible security exploits, impacting the stability and security of applications using this JavaScript interpreter.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-6191 - Proof of Concept

References

http://www.securityfocus.com/bid/102840
vdb-entryx_refsource_BID
http://git.ghostscript.com/?p=mujs.git%3Ba=commit%3Bh=258...
x_refsource_MISC
https://www.exploit-db.com/exploits/43903/
exploitx_refsource_EXPLOIT-DB

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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