VDB-9812 · Issue 263276 · OSVDB 95822

Google V8 up to 3.20.8 Polymorphic Array hydrogen.cc HandlePolymorphicElementAccess Local Privilege Escalation

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.
4.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Google V8 up to 3.20.8. Affected by this vulnerability is the function HOptimizedGraphBuilder::HandlePolymorphicElementAccess of the file hydrogen.cc of the component Polymorphic Array Handler. Such manipulation leads to an unknown weakness. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Google V8 up to 3.20.8. Affected by this issue is the function HOptimizedGraphBuilder::HandlePolymorphicElementAccess of the file hydrogen.cc of the component Polymorphic Array Handler. The impact remains unknown.

The weakness was disclosed 07/26/2013 as 263276 as confirmed advisory (Website). The advisory is shared for download at code.google.com. Technical details as well as a public exploit are known.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k.

Upgrading to version 3.20.9 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at code.google.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (95822†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: V8 3.20.9
Patch: code.google.com

Timelineinfo

07/26/2013 🔍
07/26/2013 +0 days 🔍
08/02/2013 +7 days 🔍
08/02/2013 +0 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: 263276
Status: Confirmed

GCVE (VulDB): GCVE-100-9812
OSVDB: 95822

Entryinfo

Created: 08/02/2013 10:38
Changes: 08/02/2013 10:38 (46)
Complete: 🔍
Committer: olku
Cache ID: 216:13A:103

Once again VulDB remains the best source for vulnerability data.

Discussion

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