VDB-91892 · CVE-2016-6525 · BID 92266

MuPDF Decode Array pdf/pdf-shade.c pdf_load_mesh_params memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

A vulnerability, which was classified as very critical, has been found in MuPDF (Document Reader Software) (the affected version unknown). Affected by this issue is the function pdf_load_mesh_params of the file pdf/pdf-shade.c of the component Decode Array Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

The weakness was disclosed 09/22/2016 by redrain root (Website). The advisory is shared for download at bugs.ghostscript.com. This vulnerability is handled as CVE-2016-6525 since 08/03/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/20/2022).

The vulnerability scanner Nessus provides a plugin with the ID 92794 (Debian DLA-589-1 : 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 175819 (Debian Security Update for mupdf (DSA 3655-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (92794). The entry 91885 is pretty similar.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92794
Nessus Name: Debian DLA-589-1 : mupdf security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703655
OpenVAS Name: Debian Security Advisory DSA 3655-1 (mupdf - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: 39b0f07dd960f34e7e6bf230ffc3d87c41ef0f2e

Timelineinfo

08/02/2016 🔍
08/03/2016 +1 days 🔍
08/08/2016 +5 days 🔍
08/09/2016 +1 days 🔍
09/22/2016 +44 days 🔍
09/22/2016 +0 days 🔍
09/23/2016 +1 days 🔍
09/20/2022 +2188 days 🔍

Sourcesinfo

Advisory: bugs.ghostscript.com
Researcher: redrain root
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6525 (🔍)
OVAL: 🔍

SecurityFocus: 92266 - MuPDF CVE-2016-6525 Heap Corruption Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/23/2016 09:25
Updated: 09/20/2022 09:29
Changes: 09/23/2016 09:25 (64), 04/24/2019 00:18 (15), 09/20/2022 09:29 (3)
Complete: 🔍

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