MuPDF up to 1.9 pdf-object.c pdf_to_num use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in MuPDF up to 1.9. The impacted element is the function pdf_to_num of the file pdf-object.c. Executing a manipulation can lead to use after free. The identification of this vulnerability is CVE-2016-8674. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in MuPDF up to 1.9 (Document Reader Software). This vulnerability affects the function pdf_to_num of the file pdf-object.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability. CVE summarizes:

The pdf_to_num function in pdf-object.c in MuPDF before 1.10 allows remote attackers to cause a denial of service (use-after-free and application crash) via a crafted file.

The bug was discovered 09/22/2016. The weakness was shared 02/15/2017 by Agostino Sarubbo (oss-sec). The advisory is available at openwall.com. This vulnerability was named CVE-2016-8674 since 10/15/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 146 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97442 (Debian DSA-3797-1 : mupdf - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276504 (Fedora Security Update for mupdfa (FEDORA-2017-9a819664a6)).

Upgrading to version 1.10 eliminates this vulnerability. The upgrade is hosted for download at git.ghostscript.com. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97442) and SecurityFocus (BID 93127†). The entries VDB-96979 and VDB-98156 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97442
Nessus Name: Debian DSA-3797-1 : mupdf - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703797
OpenVAS Name: Debian Security Advisory DSA 3797-1 (mupdf - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: MuPDF 1.10

Timelineinfo

09/22/2016 🔍
09/22/2016 +0 days 🔍
10/15/2016 +23 days 🔍
02/15/2017 +123 days 🔍
02/15/2017 +0 days 🔍
02/16/2017 +1 days 🔍
02/28/2017 +12 days 🔍
03/01/2017 +1 days 🔍
08/15/2020 +1263 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Agostino Sarubbo
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8674 (🔍)
GCVE (CVE): GCVE-0-2016-8674
GCVE (VulDB): GCVE-100-96994

OVAL: 🔍

SecurityFocus: 93127 - MuPDF 'pdf-object.c' Use After Free Denial of Service Vulnerability
OSVDB: - CVE-2016-8674 - MuPDF - Use-After-Free Issue

See also: 🔍

Entryinfo

Created: 02/16/2017 08:58
Updated: 08/15/2020 07:37
Changes: 02/16/2017 08:58 (80), 08/15/2020 07:37 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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