FreeType 2 before 2.4.7, as used in CoreGraphics in Apple iOS before 5, Mandriva Enterprise Server 5, and possibly other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font, a different vulnerability than CVE-2011-0226.

The remote Solaris system is missing necessary patches to address security updates :

  - FreeType 2 before 2.4.7, as used in CoreGraphics in     Apple iOS before 5, Mandriva Enterprise Server 5, and     possibly other products, allows remote attackers to     execute arbitrary code or cause a denial of service     (memory corruption) via a crafted font, a different     vulnerability than CVE-2011-0226. (CVE-2011-3256)

Multiple input validation flaws were found in the way FreeType processed bitmap font files. If a specially crafted font file was loaded by an application linked against FreeType, it could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application.

This update of freetype2 fixes multiple security flaws that could allow attackers to cause a denial of service or to execute arbitrary code via specially crafted fonts (CVE-2011-3256, CVE-2011-3439).

The MITRE CVE database describes CVE-2011-3256 as :

FreeType 2 before 2.4.7, as used in CoreGraphics in Apple iOS before 5, Mandriva Enterprise Server 5, and possibly other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font, a different vulnerability than CVE-2011-0226.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2011-1402 advisory.

    - Add freetype-2.3.11-CVE-2011-3256.patch         (Handle some border cases.)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0094 advisory.

  - freetype: FT_Bitmap_New integer overflow, FreeType TT_Vary_Get_Glyph_Deltas improper input validation     (CVE-2011-3256)

  - freetype: Multiple security flaws when loading CID-keyed Type 1 fonts (CVE-2011-3439)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

FreeType is a free, high-quality, portable font engine that can open and manage font files. It also loads, hints, and renders individual glyphs efficiently. The freetype packages for Scientific Linux 4 provide both the FreeType 1 and FreeType 2 font engines. The freetype packages for Scientific Linux 5 and 6 provide only the FreeType 2 font engine.

Multiple input validation flaws were found in the way FreeType processed bitmap font files. If a specially crafted font file was loaded by an application linked against FreeType, it could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3256)

Note: These issues only affected the FreeType 2 font engine.

Users are advised to upgrade to these updated packages, which contain a backported patch to correct these issues. The X server must be restarted (log out, then log back in) for this update to take effect.

The mobile device is running a version of iOS that is prior to version 5.0. Version 5.0 contains numerous security-related fixes for the following vulnerabilities :

  - Apple iOS Calendar Synchronization SSL Certificate     Validation Information Disclosure Vulnerability     (CVE-2011-3253)

  - Apple iOS Calendar Cross-Site Scripting Vulnerability     (CVE-2011-3254)

  - Apple iOS CFNetwork Information Disclosure Vulnerability     (CVE-2011-3255)

  - Apple iOS and Mac OS X CFNetwork Cross Domain     Information Disclosure Vulnerability (CVE-2011-3246)

  - Apple Mac OS X CoreFoundation Memory Corruption     Vulnerability (CVE-2011-0259)

  - FreeType Font Document Multiple Memory Corruption     Vulnerabilities (CVE-2011-3256)

  - Apple Mac OS X QuickTime Cross-Domain Information     Disclosure Vulnerability (CVE-2011-0187)

  - Apple iOS Mail Cookie Synchronization Validation     Information Disclosure Vulnerability (CVE-2011-3257)

  - An information disclosure vulnerability, known as BEAST,     exists in the SSL 3.0 and TLS 1.0 protocols due to a     flaw in the way the initialization vector (IV) is     selected when operating in cipher-block chaining (CBC)     modes. A man-in-the-middle attacker can exploit this     to obtain plaintext HTTP header data, by using a     blockwise chosen-boundary attack (BCBA) on an HTTPS     session, in conjunction with JavaScript code that uses     the HTML5 WebSocket API, the Java URLConnection API,     or the Silverlight WebClient API. (CVE-2011-3389)

  - Opera Web Browser Information Disclosure Vulnerability

  - Apple iOS Home Screen Information Disclosure     Vulnerability (CVE-2011-3431)

  - libTIFF CCITT Group 4 Encoded TIFF Image Buffer Overflow     Vulnerability (CVE-2011-0192)

  - Apple Safari ImageIO TIFF Image Handling Heap Buffer     Overflow Vulnerability (CVE-2011-0241)

  - Apple Mac OS X ICU Buffer Overflow Vulnerability     (CVE-2011-0206)

  - Apple Kernel TCP Exhaustion Denial of Service     Vulnerability (CVE-2011-3259)

  - Apple Mac OS X IPV6 Socket Options Denial of Service     Vulnerability (CVE-2011-1132)

  - Apple iOS Keyboard Information Disclosure Vulnerability     (CVE-2011-3245)

  - Apple Safari 'libxml' Remote Code Execution     Vulnerability (CVE-2011-0216)

  - Apple iPhone/iPad/iPod Touch prior to iOS 5 Buffer     Overflow Vulnerability (CVE-2011-3260)

  - Apple iPhone/iPad/iPod Touch prior to iOS 5 Remote Code     Execution Vulnerability (CVE-2011-3261)

  - Apple Mac OS X QuickLook Office File Memory Corruption     Vulnerability (CVE-2011-0208)

  - Apple Mac OS X QuickLook Remote Code Execution     Vulnerability (CVE-2011-0184)

  - Apple iPhone/iPad/iPod Touch 'Content-Disposition'     Header Cross-Site Scripting Vulnerability     (CVE-2011-3246)

  - Apple iOS Parental Restrictions Passcode Information     Disclosure Vulnerability (CVE-2011-3249)

  - Apple iOS Insecure Misleading UI Insecure     Configuration Weakness (CVE-2011-3430)

  - Apple iOS Remote Denial of Service Vulnerability     (CVE-2011-3432)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0218)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0221)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0222)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0225)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0232)

  - WebKit FrameOwner Element Memory Corruption Remote     Code Execution Vulnerability (CVE-2011-0233)

  - WebKit Malformed XHTML Tags Use-After-Free     Memory Corruption Vulnerability (CVE-2011-0234)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0235)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0238)

  - WebKit 'NamedNodeMap.cpp' Memory Corruption Remote     Code Execution Vulnerability (CVE-2011-0254)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-0255)

  - Google Chrome prior to 9.0.597.94 Multiple Security     Vulnerabilities (CVE-2011-0981)

  - Google Chrome prior to 9.0.597.107 Multiple Security     Vulnerabilities (CVE-2011-1109)

  - Google Chrome prior to 10.0.648.127 Multiple Security     Vulnerabilities (CVE-2011-1188)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-1288)

  - Google Chrome prior to 10.0.648.204 Multiple Security     Vulnerabilities (CVE-2011-1293)

  - Google Chrome prior to 11.0.696.57 Multiple Security     Vulnerabilities (CVE-2011-1449)

  - WebKit MathML Tags Use-After-Free Remote Code Execution     Vulnerability

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-1453)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-1457)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-1462)

  - WebKit Memory Corruption Remote Code Execution     Vulnerability (CVE-2011-1797)

  - WebKit Multiple Unspecified Remote Code Execution     Vulnerabilities (CVE-2011-2338)

  - WebKit Style Sheet Elements Remote Code Execution     Vulnerability (CVE-2011-2341)

  - Google Chrome Prior to 12.0.742.112 Multiple Security     Vulnerabilities (CVE-2011-2351)

  - Google Chrome Prior to 13.0.782.107 Multiple Security     Vulnerabilities (CVE-2011-2359)

  - Google Chrome Prior to 13.0.782.215 Multiple Security     Vulnerabilities (CVE-2011-2823)

  - Mozilla Firefox/Thunderbird/SeaMonkey YARR Remote Code     Execution Vulnerability (CVE-2011-3232)

  - Google Chrome Prior to 14.0.835.163 Multiple Security     Vulnerabilities (CVE-2011-3234)

  - WebKit Embedded URL Cross Domain Scripting Vulnerability     (CVE-2011-0242)

  - WebKit Address Bar URI Spoofing Vulnerability     (CVE-2011-1107)

  - WebKit 'libxslt' Remote Code Execution Vulnerability     (CVE-2011-1774)

  - WebKit 'HTML5' Drag and Drop Cross-Origin Information     Disclosure Vulnerability (CVE-2011-0166)

  - WebKit Inactive DOM Windows Cross Domain Scripting     Vulnerability (CVE-2011-3243)

  - Apple iOS WiFi Credentials Information Disclosure     Vulnerability (CVE-2011-3234)

The remote host is running a version of Mac OS X 10.7 that is older than version 10.7.3.  The newer version contains numerous security-related fixes for the following components :

  - Address Book
  - Apache
  - ATS
  - CFNetwork
 - CoreMedia
 - CoreText
 - CoreUI
 - curl
 - Data Security
 - dovecot
 - filecmds
 - ImageIO
 - Internet Sharing
 - Libinfo
 - libresolv
 - libsecurity
 - OpenGL
 - PHP
 - QuickTime
 - Subversion
 - Time Machine
 - WebDAV Sharing
 - Webmail
 - X11

The remote host is running a version of Mac OS X 10.7.x that is prior to 10.7.3. The newer version contains multiple security-related fixes for the following components :

  - Address Book
  - Apache
  - ATS
  - CFNetwork
  - CoreMedia
  - CoreText
  - CoreUI
  - curl
  - Data Security
  - dovecot
  - filecmds
  - ImageIO
  - Internet Sharing
  - Libinfo
  - libresolv
  - libsecurity
  - OpenGL
  - PHP
  - QuickTime
  - Subversion
  - Time Machine
  - WebDAV Sharing
  - Webmail
  - X11

The remote host is affected by the vulnerability described in GLSA-201201-09 (FreeType: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in FreeType. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could entice a user to open a specially crafted font,       possibly resulting in the remote execution of arbitrary code with the       privileges of the user running the application, or a Denial of Service.
  Workaround :

    There is no known workaround at this time.

This update of freetype2 fixes multiple security flaws that could allow attackers to cause a denial of service or to execute arbitrary code via specially crafted fonts. (CVE-2011-3256 / CVE-2011-3439 / CVE-2011-2895)

This update of freetype2 fixes multiple security flaws that could allow attackers to cause a denial of service or to execute arbitrary code via specially crafted fonts. (CVE-2011-3256 / CVE-2011-3439)

It was discovered that FreeType did not correctly handle certain malformed Type 1 font files. If a user were tricked into using a specially crafted font file, a remote attacker could cause FreeType to crash or possibly execute arbitrary code with user privileges.
(CVE-2011-3256)

It was discovered that FreeType did not correctly handle certain malformed CID-keyed PostScript font files. If a user were tricked into using a specially crafted font file, a remote attacker could cause FreeType to crash or possibly execute arbitrary code with user privileges. (CVE-2011-3439).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update fixes CVE-2011-3256
----------------------------------------------------------------------
-----=

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The FreeType project reports :

A couple of vulnerabilities in handling Type 1 fonts.

Updated freetype packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4, 5, and 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

FreeType is a free, high-quality, portable font engine that can open and manage font files. It also loads, hints, and renders individual glyphs efficiently. The freetype packages for Red Hat Enterprise Linux 4 provide both the FreeType 1 and FreeType 2 font engines. The freetype packages for Red Hat Enterprise Linux 5 and 6 provide only the FreeType 2 font engine.

Multiple input validation flaws were found in the way FreeType processed bitmap font files. If a specially crafted font file was loaded by an application linked against FreeType, it could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3256)

Note: These issues only affected the FreeType 2 font engine.

Users are advised to upgrade to these updated packages, which contain a backported patch to correct these issues. The X server must be restarted (log out, then log back in) for this update to take effect.

It was discovered that missing input sanitising in Freetype's glyph handling could lead to memory corruption, resulting in denial of service or the execution of arbitrary code.

A vulnerability has been discovered and corrected in freetype2 :

FreeType allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font (CVE-2011-3256).

A regression was found in freetype2 in Mandriva Enterprise Server 5 that caused ugly font rendering with firefox (#63892).

Additionally, improvements conserning the LZW handling (as noted in the freetype-2.4.7 version) was added.

The updated packages have been patched to correct these issues.

According to its banner, the remote Apple iOS device is missing a security update.  Versions of Apple iOS 3.0 through 4.3.5 are affected by vulnerabilities within the following components :

 - CalDAV
 - Calendar
 - CFNetwork
 - CoreFoundation
 - CoreGraphics
 - CoreMedia
 - Data Access - Data Security
 - Home security
 - ImageIO
 - Kernel
 - Keyboards
 - libxml
 - OfficeImport
 - Safari
 - Settings
 - UIKit Alerts
 - WebKit
 - WiFi

ID	Name	Product	Family	Severity
80670	Oracle Solaris Third-Party Patch Update : libfxt (cve_2011_3256_denial_of)	Nessus	Solaris Local Security Checks	medium
78269	Amazon Linux AMI : freetype (ALAS-2011-8)	Nessus	Amazon Linux Local Security Checks	medium
75845	openSUSE Security Update : freetype2 (openSUSE-SU-2012:0015-1)	Nessus	SuSE Local Security Checks	high
75507	openSUSE Security Update : freetype2 (openSUSE-SU-2012:0015-1)	Nessus	SuSE Local Security Checks	high
69567	Amazon Linux AMI : freetype (ALAS-2011-08)	Nessus	Amazon Linux Local Security Checks	medium
68379	Oracle Linux 5 / 6 : freetype (ELSA-2011-1402)	Nessus	Oracle Linux Local Security Checks	high
64023	RHEL 5 : freetype (RHSA-2012:0094)	Nessus	Red Hat Local Security Checks	high
61164	Scientific Linux Security Update : freetype on SL4.x, SL5.x, SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
60026	Apple iOS < 5.0 Multiple Vulnerabilities (BEAST)	Nessus	Mobile Devices	critical
6303	Mac OS X 10.7 < 10.7.3 Multiple Vulnerabilities	Nessus Network Monitor	Generic	critical
57797	Mac OS X 10.7.x < 10.7.3 Multiple Vulnerabilities (BEAST)	Nessus	MacOS X Local Security Checks	critical
57651	GLSA-201201-09 : FreeType: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
57198	SuSE 10 Security Update : freetype2 (ZYPP Patch Number 7872)	Nessus	SuSE Local Security Checks	high
57103	SuSE 11.1 Security Update : freetype2 (SAT Patch Number 5491)	Nessus	SuSE Local Security Checks	high
56870	Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 / 11.10 : freetype vulnerabilities (USN-1267-1)	Nessus	Ubuntu Local Security Checks	high
56789	Fedora 15 : freetype-2.4.4-6.fc15 (2011-14749)	Nessus	Fedora Local Security Checks	medium
56685	FreeBSD : freetype -- Some type 1 fonts handling vulnerabilities (54075e39-04ac-11e1-a94e-bcaec565249c)	Nessus	FreeBSD Local Security Checks	medium
56654	CentOS 4 / 5 : freetype (CESA-2011:1402)	Nessus	CentOS Local Security Checks	medium
56636	RHEL 4 / 5 / 6 : freetype (RHSA-2011:1402)	Nessus	Red Hat Local Security Checks	medium
56624	Debian DSA-2328-1 : freetype - missing input sanitising	Nessus	Debian Local Security Checks	medium
56598	Mandriva Linux Security Advisory : freetype2 (MDVSA-2011:157)	Nessus	Mandriva Local Security Checks	medium
6041	Apple iOS < 5.0 Multiple Vulnerabilities	Nessus Network Monitor	Mobile Devices	high

Detections

Analytics

CVE-2011-3256

high

Tenable Plugins

medium

medium

high

high

medium

high

high

medium

critical

critical

critical

high

high

high

high

medium

medium

medium

medium

medium

medium

high