X.Org X11 fonts.dir buffer overflow

xorg-fontsdir-bo (33419)

High Risk

Description:

X.Org X11 is vulnerable to a heap-based buffer overflow, caused by an integer overflow vulnerability in the parsing of the fonts.dir font information file. By creating a specially-crafted fonts.dir font information file and persuading a victim to open the file, a local attacker could overflow a buffer and execute arbitrary code on the system with ROOT privileges or cause the system to crash.

Platforms Affected:

• Canonical, Ubuntu 5.10
• Canonical, Ubuntu 6.06 LTS
• Canonical, Ubuntu 6.10
• Debian, Debian Linux 3.1
• Gentoo, Linux
• MandrakeSoft, Mandrake Linux 2007
• MandrakeSoft, Mandrake Linux 2007 X86_64
• MandrakeSoft, Mandrake Linux 2007.1
• MandrakeSoft, Mandrake Linux 2007.1 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 3.0
• MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 4.0
• Microsoft, Windows Vista
• Novell, Linux Desktop 9
• Novell, Linux POS 9
• Novell, Open Enterprise Server
• Novell, Open Enterprise Server
• Novell, OpenSUSE 10.2
• Novell, UnitedLinux 1.0
• RedHat, Enterprise Linux 2.1 AS
• RedHat, Enterprise Linux 2.1 ES
• RedHat, Enterprise Linux 2.1 WS
• RedHat, Enterprise Linux 3 WS
• RedHat, Enterprise Linux 3 AS
• RedHat, Enterprise Linux 3 Desktop
• RedHat, Enterprise Linux 3 ES
• RedHat, Enterprise Linux 4 WS
• RedHat, Enterprise Linux 4 ES
• RedHat, Enterprise Linux 4 Desktop
• RedHat, Enterprise Linux 4 AS
• RedHat, Enterprise Linux 5
• RedHat, Enterprise Linux 5 Client Workstation
• RedHat, Enterprise Linux 5 Client
• RedHat, Enterprise Linux Desktop 5.0
• RedHat, Linux Advanced Workstation 2.1 Itanium
• Sun, Solaris 10
• Sun, Solaris 8
• Sun, Solaris 9
• SuSE, SLE SDK 10
• SuSE, SuSE Linux 9.0
• SuSE, SuSE Linux Retail Solution 8
• SuSE, SuSE SLED 10
• SuSE, SuSE SLES 10
• SuSE, SuSE SLES 9
• Turbolinux, Turbolinux 10 Desktop
• Turbolinux, Turbolinux 10 F...
• Turbolinux, Turbolinux 10 Server
• Turbolinux, Turbolinux 10 Server x64 Ed
• Turbolinux, Turbolinux 8 Server
• Turbolinux, Turbolinux FUJI
• Turbolinux, Turbolinux Home
• Turbolinux, Turbolinux Multimedia
• Turbolinux, Turbolinux Personal
• Turbolinux, Turbolinux wizpy
• X.Org, X.Org X11 X11R7.1

Remedy:

Upgrade to the latest version of X.Org X11 (7.2 or later), or apply the appropriate patch for your system, available from the X.Org Foundation Web site. See References.

For Apple Safari:
Upgrade to the latest version of Apple Safari (3.0.4 beta or later), available from the Apple Web site. See References.

For Red Hat Linux (libXfont):
Refer to RHSA-2007:0132 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux (X.org):
Refer to RHSA-2007:0126 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux (XFree86):
Refer to RHSA-2007:0125 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu Linux:
Refer to USN-448-1 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux (tightvnc):
Refer to MDKSA-2007:080 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux (xorg-x11/XFree86):
Refer to MDKSA-2007:079 for patch, upgrade, or suggested workaround information. See References.

For Sun Solaris:
Refer to Sun Alert ID: 102886 for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux (tightvnc, libxfont):
Refer to GLSA 200705-10 for patch, upgrade, or suggested workaround information. See References.

For Turbolinux (xorg-x11, XFree86):
Refer to TLSA-2007-26 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux (xfree86):
Refer to DSA-1294-1 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Gain Privileges

References:

• Apple Safari Web site, Apple - Safari 3 Public Beta at http://www.apple.com/safari/.
• Apple Web site, About the security content of Safari 3 Beta Update 3.0.4 at http://docs.info.apple.com/article.html?artnum=307038.
• iDefense Labs PUBLIC ADVISORY: 04.03.07, Multiple Vendor X Server fonts.dir File Parsing Integer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=502.
• Sun Alert ID: 102886, Multiple vulnerabilities in libfreetype, Xsun(1) and Xorg(1) at http://sunsolve.sun.com/search/document.do?assetkey=1-26-102886-1.
• X.Org Foundation Web site, X.Org Wiki - Home at http://xorg.freedesktop.org/wiki/Home.
• ASA-2007-141: xorg-x11 security update (RHSA-2007-0126)
• ASA-2007-167: XFree86 security update (RHSA-2007-0125)
• ASA-2007-178: Multiple vulnerabilities in libfreetype Xsun(1)sand Xorg(1) (Sun 102886)
• BID-23283: X.Org LibXFont Multiple Local Integer Overflow Vulnerabilities
• BID-23300: ImageMagick XGetPixel/XInitImage Multiple Integer Overflow Vulnerabilities
• CVE-2007-1352: Integer overflow in the FontFileInitTable function in X.Org libXfont before 20070403 allows remote authenticated users to execute arbitrary code via a long first line in the fonts.dir file, which results in a heap overflow.
• DSA-1294: xfree86 -- several vulnerabilities
• FrSIRT/ADV-2007-1214: PulseAudio Malformed Packets Handling Multiple Remote Denial of Service Vulnerabilities
• FrSIRT/ADV-2007-1217: X.Org X11 Multiple Function Integer Overflow and Local Privilege Escalation Vulnerabilities
• FrSIRT/ADV-2007-1548: Sun Solaris Libfreetype and Xorg Code Execution and Privilege Escalation Issues
• GLSA-200705-10: LibXfont, TightVNC: Multiple vulnerabilities
• MDKSA-2007:079: Updated xorg-x11/XFree86 packages fix integer overflow vulnerabilities
• MDKSA-2007:079-1: Updated xorg-x11/XFree86 packages fix integer overflow vulnerabilities
• MDKSA-2007:080: Updated tightvnc packages fix integer overflow vulnerabilities
• MDKSA-2007:080-1: Updated tightvnc packages fix integer overflow vulnerabilities
• RHSA-2007-0125: Important: XFree86 security update
• RHSA-2007-0126: Important: xorg-x11 security update
• RHSA-2007-0132: Important: libXfont security update
• SA24741: X.Org X11 Multiple Vulnerabilities
• SA24758: XFree86 Multiple Vulnerabilities
• SA25006: Sun Solaris X11 Multiple Vulnerabilities
• SA25216: Avaya CMS / IR X.Org X11 Multiple Vulnerabilities
• SECTRACK ID: 1017857: X11 Overflows Let Local Users Gain Root Privileges
• SUSE-SA:2007:027: XFree86Xorg security problems

Reported:

Apr 03, 2007

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