MulticoreWare x265 up to 2.5 pixel-a.asm planeClipAndMax integer underflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in MulticoreWare x265 up to 2.5. Impacted is the function planeClipAndMax of the file pixel-a.asm. This manipulation causes integer underflow. This vulnerability is registered as CVE-2017-13666. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in MulticoreWare x265 up to 2.5. Affected by this vulnerability is the function planeClipAndMax of the file pixel-a.asm. The manipulation with an unknown input leads to a integer underflow vulnerability. The CWE definition for the vulnerability is CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An integer underflow vulnerability exists in pixel-a.asm, the x86 assembly code for planeClipAndMax() in MulticoreWare x265 through 2.5, as used in libbpg and other products. A small height value can cause an integer underflow, which leads to a crash. This is a different vulnerability than CVE-2017-8906.

The bug was discovered 08/23/2017. The weakness was published 08/24/2017 (Website). It is possible to read the advisory at bitbucket.org. This vulnerability is known as CVE-2017-13666 since 08/24/2017. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
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: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2017 🔍
08/24/2017 +1 days 🔍
08/24/2017 +0 days 🔍
08/24/2017 +0 days 🔍
08/25/2017 +1 days 🔍
12/16/2022 +1939 days 🔍

Sourcesinfo

Advisory: 364
Status: Not defined

CVE: CVE-2017-13666 (🔍)
GCVE (CVE): GCVE-0-2017-13666
GCVE (VulDB): GCVE-100-105715

Entryinfo

Created: 08/25/2017 08:46
Updated: 12/16/2022 14:49
Changes: 08/25/2017 08:46 (51), 11/10/2019 08:48 (7), 12/16/2022 14:49 (3)
Complete: 🔍
Cache ID: 216::103

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