Apple Safari up to 5.1.7 WebKit memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

A vulnerability classified as critical has been found in Apple Safari up to 5.1.7 (Web Browser). Affected is an unknown function of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

WebKit, as used in Apple Safari before 6.0, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2012-07-25-1.

The weakness was released 07/25/2012 by Martin Barbella and Jose A. Vazquez (Slawomir Blazek) with Google Chrome Security Team & iDefense Labs VCP as HT5400 as confirmed knowledge base article (Apple Security Announce). The advisory is shared for download at support.apple.com. The public release was coordinated with the vendor. This vulnerability is traded as CVE-2012-1520 since 03/08/2012. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/27/2018).

It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 62077 (Apple iTunes < 10.7 Multiple Vulnerabilities (credentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120376 (Apple Safari Multiple Vulnerabilities (APPLE-SA-2012-07-25-1)).

Upgrading to version 6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at trac.webkit.org. 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 Tenable (62077). Entries connected to this vulnerability are available at 4460, 4459, 4461 and 4464.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62077
Nessus Name: Apple iTunes < 10.7 Multiple Vulnerabilities (credentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802962
OpenVAS Name: Apple iTunes Multiple Vulnerabilities - Sep 12 (Windows)
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: Safari 6
Patch: trac.webkit.org

Timelineinfo

03/08/2012 🔍
07/25/2012 +139 days 🔍
07/25/2012 +0 days 🔍
07/25/2012 +0 days 🔍
07/26/2012 +1 days 🔍
07/26/2012 +0 days 🔍
07/27/2012 +1 days 🔍
07/31/2012 +4 days 🔍
09/13/2012 +44 days 🔍
04/27/2018 +2052 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT5400
Researcher: Martin Barbella , Jose A. Vazquez (Slawomir Blazek)
Organization: Google Chrome Security Team & iDefense Labs VCP
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-1520 (🔍)
OVAL: 🔍

SecurityTracker: 1027307
SecurityFocus: 51041
Secunia: 50058 - Apple Safari for Mac OS X Multiple Vulnerabilities, Highly Critical
OSVDB: 84139

See also: 🔍

Entryinfo

Created: 07/31/2012 17:58
Updated: 04/27/2018 09:29
Changes: 07/31/2012 17:58 (78), 04/27/2018 09:29 (8)
Complete: 🔍

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