Apple Safari up to 3.2.3 XML libxml memory corruption

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

Summaryinfo

A vulnerability classified as problematic has been found in Apple Safari up to 3.2.3. This issue affects some unknown processing in the library libxml of the component XML Handler. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2008-3529. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Safari up to 3.2.3 (Web Browser). It has been classified as critical. This affects some unknown processing in the library libxml of the component XML Handler. 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. The summary by CVE is:

Heap-based buffer overflow in the xmlParseAttValueComplex function in parser.c in libxml2 before 2.7.0 allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via a long XML entity name.

The weakness was published 05/13/2009 with Apple as HT3550 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2008-3529 since 08/07/2008. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Kevin Finisterre and been published 2 weeks after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 67167 (Solaris 9 (sparc) : 127681-07), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Solaris Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115942 (Red Hat libxml2 Security Update (RHSA-2008:0884-3)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at support.apple.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (45085), Exploit-DB (8798), Tenable (67167), SecurityFocus (BID 31126†) and OSVDB (49993†). Similar entries are available at VDB-3976, VDB-3977, VDB-21466 and VDB-45179. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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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

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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
Author: Kevin Finisterre
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67167
Nessus Name: Solaris 9 (sparc) : 127681-07
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 61776
OpenVAS Name: Debian Security Advisory DSA 1654-1 (libxml2)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Exploit Delay Time: 🔍

Patch: support.apple.com

Timelineinfo

08/07/2008 🔍
09/11/2008 +35 days 🔍
09/11/2008 +0 days 🔍
09/12/2008 +1 days 🔍
10/14/2008 +32 days 🔍
11/18/2008 +35 days 🔍
05/13/2009 +175 days 🔍
05/19/2009 +6 days 🔍
05/26/2009 +7 days 🔍
05/26/2009 +0 days 🔍
08/10/2009 +76 days 🔍
07/03/2013 +1423 days 🔍
11/30/2024 +4168 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT3550
Organization: Apple
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-3529 (🔍)
GCVE (CVE): GCVE-0-2008-3529
GCVE (VulDB): GCVE-100-3975

OVAL: 🔍

X-Force: 45085 - Libxml2 entity names buffer overflow, High Risk
SecurityFocus: 31126 - libxml XML Entity Name Heap Buffer Overflow Vulnerability
Secunia: 36235 - Sun Java System Access Manager Policy Agent XML Processing Vulnerabilities, Moderately Critical
OSVDB: 49993 - libxml2 xmlSAX2Characters() Function XML File Parsing Overflow
SecurityTracker: 1020855
Vupen: ADV-2009-1298

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

Entryinfo

Created: 05/19/2009 15:22
Updated: 11/30/2024 14:54
Changes: 05/19/2009 15:22 (95), 04/27/2019 09:59 (11), 11/30/2024 14:54 (17)
Complete: 🔍
Cache ID: 216:189:103

Be aware that VulDB is the high quality source for vulnerability data.

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