Integer Overflow Vulnerability in SumatraPDF and MuPDF by Artifex Software
CVE-2012-5340

7.8HIGH

Key Information:

Vendor

SumatraPDFreader

Status
SumatraPDF
Vendor
CVE Published:
23 January 2020

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2012-5340?

The vulnerability present in SumatraPDF and MuPDF allows remote attackers to exploit an integer overflow flaw in the lex_number() function. This can be triggered through specially crafted PDF files, leading to potential remote code execution. Users should be aware of the risks associated with processing untrusted PDF documents to mitigate exposure to this vulnerability.

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-2012-5340 - Proof of Concept

References

http://www.exploit-db.com/exploits/23246
exploit
https://bugs.ghostscript.com/show_bug.cgi?id=693371
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/c...

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

.