Sumatra PDF up to 1.0 mupdf/pdf_shade4.c memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6$0-$5k0.00

A vulnerability was found in Sumatra PDF up to 1.0 (Document Reader Software). It has been classified as critical. This affects an unknown code block of the file mupdf/pdf_shade4.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 11/30/2009 by Christophe Devine (Website). The advisory is shared at blog.kowalczyk.info. This vulnerability is uniquely identified as CVE-2009-4117 since 11/30/2009. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Christophe Devine and been published even before and not after the advisory. It is declared as proof-of-concept. The exploit is shared for download at exploit-db.com. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at blog.kowalczyk.info. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (54441) and Exploit-DB (10244).

Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Christophe Devine
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: blog.kowalczyk.info

Timelineinfo

11/28/2009 🔍
11/28/2009 +0 days 🔍
11/30/2009 +2 days 🔍
11/30/2009 +0 days 🔍
11/30/2009 +0 days 🔍
11/30/2009 +0 days 🔍
12/16/2009 +15 days 🔍
08/18/2017 +2802 days 🔍

Sourcesinfo

Advisory: blog.kowalczyk.info
Researcher: Christophe Devine
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-4117 (🔍)
X-Force: 54441 - MuPDF multiple pdf_shade4.c buffer overflow, High Risk
Secunia: 37513 - SumatraPDF Shading Pattern Processing Buffer Overflow Vulnerabilities, Highly Critical
OSVDB: 60609 - MuPDF mupdf/pdf_shade4.c Multiple Function PDF File Handling Overflow
Vupen: ADV-2009-3355

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/16/2009 10:54 AM
Updated: 08/18/2017 01:48 PM
Changes: 12/16/2009 10:54 AM (75), 08/18/2017 01:48 PM (3)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!