Apple Mac OS X up to 10.3.9 khtmlparser::poponeblock memory corruption

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.
6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Apple Mac OS X up to 10.3.9. This vulnerability affects the function khtmlparser::poponeblock. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2006-3946. Furthermore, there is an exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apple Mac OS X up to 10.3.9 (Operating System). Affected is the function khtmlparser::poponeblock. 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:

WebCore in Apple Mac OS X 10.3.9 and 10.4 through 10.4.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted HTML that triggers a "memory management error" in WebKit, possibly due to a buffer overflow, as originally reported for the KHTMLParser::popOneBlock function in Apple Safari 2.0.4 using Javascript that changes document.body.innerHTML within a DIV tag.

The bug was discovered 07/31/2006. The weakness was shared 07/31/2006 by Jose Avila III and Pusscat (Website). The advisory is shared for download at browserfun.blogspot.com. This vulnerability is traded as CVE-2006-3946 since 07/31/2006. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

After immediately, there has been an exploit disclosed. The exploit is shared for download at metasploit.com. 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 22476 (Mac OS X 10.4.x < 10.4.8 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115422 (Apple Mac OS X 10.4.8 and Security Update 2006-006 Not Installed (APPLE-SA-2006-09-29)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (28081), Tenable (22476), SecurityFocus (BID 19250†), OSVDB (27534†) and Secunia (SA21271†). The entries VDB-32567, VDB-32566, VDB-32565 and VDB-32564 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 22476
Nessus Name: Mac OS X 10.4.x < 10.4.8 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍
PaloAlto IPS: 🔍

Timelineinfo

07/27/2006 🔍
07/29/2006 +1 days 🔍
07/31/2006 +2 days 🔍
07/31/2006 +0 days 🔍
07/31/2006 +0 days 🔍
07/31/2006 +0 days 🔍
07/31/2006 +0 days 🔍
07/31/2006 +0 days 🔍
07/31/2006 +0 days 🔍
09/29/2006 +60 days 🔍
10/01/2006 +2 days 🔍
10/01/2006 +0 days 🔍
11/14/2006 +44 days 🔍
03/12/2015 +3040 days 🔍
07/08/2019 +1579 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: browserfun.blogspot.com
Researcher: Jose Avila III, Pusscat
Status: Confirmed

CVE: CVE-2006-3946 (🔍)
GCVE (CVE): GCVE-0-2006-3946
GCVE (VulDB): GCVE-100-31584
X-Force: 28081
SecurityFocus: 19250 - Apple Safari KHTMLParser::popOneBlock Buffer Overflow Vulnerability
Secunia: 21271 - Mac OS X WebKit "KHTMLParser::popOneBlock()" Memory Corruption, Highly Critical
OSVDB: 27534 - Apple Safari KHTMLParser::popOneBlock Code Execution
SecurityTracker: 1016957
Vulnerability Center: 12798 - Apple Safari 2.0.4 Remote Code Execution and DoS Due to a Vulnerability in KHTMLParser::popOneBlock, Medium
Vupen: ADV-2006-3069

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 03/12/2015 14:25
Updated: 07/08/2019 20:53
Changes: 03/12/2015 14:25 (81), 07/08/2019 20:53 (10)
Complete: 🔍
Cache ID: 216:F03:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!