Vulnerability ID 5803

Apple Safari up to 5.1.7 WebKit buffer overflow

Apple
CVSSv3 Temp ScoreCurrent Exploit Price (≈)
8.6$2k-$5k

A vulnerability was found in Apple Safari up to 5.1.7. It has been declared as critical. Affected by this vulnerability is an unknown function of the component WebKit. The manipulation with an unknown input leads to a buffer overflow vulnerability. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 07/25/2012 by Martin Barbella (Slawomir Blazek) with Google Chrome Security Team 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 in cooperation with Apple. This vulnerability is known as CVE-2012-3595 since 06/19/2012. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

We expect the 0-day to have been worth approximately $50k-$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.

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 databases at Secunia (SA50058) and SecurityTracker (ID 1027307). See 4645, 4650, 4654 and 5585 for similar entries.

CVSSv3

Base Score: 9.0 [?]
Temp Score: 8.6 [?]
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:X/RL:O/RC:C [?]
Reliability: High

CVSSv2

Base Score: 7.6 (CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C) [?]
Temp Score: 6.6 (CVSS2#E:ND/RL:OF/RC:C) [?]
Reliability: High

AVACAuCIA
LHMNNN
AMSPPP
NLNCCC
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
LocalHighMultipleNoneNoneNone
AdjacentMediumSinglePartialPartialPartial
NetworkLowNoneCompleteCompleteComplete

CPE

Exploiting

Class: Buffer overflow
Local: No
Remote: Yes

Availability: No
Access: Public

Current Price Estimation: $50k-$100k (0-day) / $2k-$5k (Today)

0-Day$0-$1k$1k-$2k$2k-$5k$5k-$10k$10k-$25k$25k-$50k$50k-$100k$100k-$500k
Today$0-$1k$1k-$2k$2k-$5k$5k-$10k$10k-$25k$25k-$50k$50k-$100k$100k-$500k


Nessus ID: 62077
Nessus Name: Apple iTunes < 10.7 Multiple Vulnerabilities (credentialed check)
Nessus File: itunes_10_7.nasl
Nessus Family: Windows
OpenVAS ID: 802962
OpenVAS Name: Apple iTunes Multiple Vulnerabilities - Sep 12 (Windows)
OpenVAS File: gb_apple_itunes_mult_vuln_sep12_win.nasl
OpenVAS Family: General

Countermeasures

Recommended: Upgrade
Status: Official fix
Reaction Time: 0 days since reported
0-Day Time: 0 days since found
Exposure Time: 0 days since known

Upgrade: Safari 6
Patch: trac.webkit.org

Timeline

06/19/2012 CVE assigned
07/25/2012 +36 days Advisory disclosed
07/25/2012 +0 days Countermeasure disclosed
07/25/2012 +0 days NVD disclosed
07/26/2012 +1 days SecurityTracker entry created
07/27/2012 +1 days OSVDB entry created
07/31/2012 +4 days VulDB entry created
12/07/2015 +1224 days VulDB entry updated

Sources

Advisory: HT5400
Researcher: Martin Barbella (Slawomir Blazek)
Organization: Google Chrome Security Team
Status: Confirmed
Confirmation: support.apple.com
Coordinated: Yes

CVE: CVE-2012-3595 (mitre.org) (nvd.nist.org) (cvedetails.com)

Secunia: 50058 - Apple Safari for Mac OS X Multiple Vulnerabilities, Highly Critical
SecurityTracker: 1027307 - Apple Safari Bugs Let Remote Users Execute Arbitrary Code, Spoof the URL Address Bar, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information
OSVDB: 84146 - WebKit 'FrameLoader::checkTimerFired' Function Use-after-free Issue

See also: 4645, 4650, 4654, 5585, 5796, 5797, 5798, 5799, 5800, 5801, 5802, 5804, 5805, 5806

Entry

Created: 07/31/2012
Updated: 12/07/2015
Entry: 91.4% complete