Apple iChat 3.1.6 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability classified as critical has been found in Apple iChat 3.1.6 (Chat Software). This affects some unknown processing. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.

The bug was discovered 01/20/2007. The weakness was released 02/15/2007 by LMH (Website). It is possible to read the advisory at us-cert.gov. This vulnerability is uniquely identified as CVE-2007-0021 since 01/02/2007. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 24354 (Mac OS X Multiple Vulnerabilities (Security Update 2007-002)), 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 115515 (Apple Mac OS X Security Update 2007-002 Not Installed (APPLE-SA-2007-02-15)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 10116. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4023.

The vulnerability is also documented in the databases at X-Force (31679) and Tenable (24354). Entries connected to this vulnerability are available at 2872, 34343, 34739 and 34738.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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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

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 24354
Nessus Name: Mac OS X Multiple Vulnerabilities (Security Update 2007-002)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Context: 🔍

Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Snort ID: 10116
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
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Timelineinfo

01/02/2007 🔍
01/20/2007 +18 days 🔍
01/20/2007 +0 days 🔍
01/20/2007 +0 days 🔍
01/22/2007 +2 days 🔍
01/28/2007 +6 days 🔍
02/15/2007 +18 days 🔍
02/15/2007 +0 days 🔍
02/16/2007 +0 days 🔍
02/16/2007 +0 days 🔍
02/16/2007 +0 days 🔍
02/16/2007 +0 days 🔍
03/13/2015 +2946 days 🔍
07/14/2019 +1584 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: us-cert.gov
Researcher: LMH
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-0021 (🔍)
X-Force: 31679
SecurityTracker: 1017661
Vulnerability Center: 14154 - Apple iChat Format String Vulnerability via aim:// URI, High
SecurityFocus: 22146 - Apple iChat AIM URL Handler Remote Format String Vulnerability
Secunia: 24198 - Mac OS X Security Update Fixes Multiple Vulnerabilities, Highly Critical
OSVDB: 32715 - Apple iChat aim:// URI Format String
Vupen: ADV-2007-0274

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/13/2015 10:40
Updated: 07/14/2019 09:31
Changes: 03/13/2015 10:40 (83), 07/14/2019 09:31 (12)
Complete: 🔍

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