Heap-based buffer overflow in the Lookup_MarkMarkPos function in the HarfBuzz module (harfbuzz-gpos.c), as used by Qt before 4.7.4 and Pango, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted font file.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-1328 advisory.

    - Resolves: #rhbz737813        fix multiple flaws in Qt        CVE-2011-3193, CVE-2011-3194

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

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

CVE-2011-3193

Check for buffer overflow in Lookup_MarkMarkPos that may cause crash in this function with certain fonts.

CVE-2011-3194

Fix tiff reader to handle TIFFTAG_SAMPLESPERPIXEL for grayscale images. The reader uses QImage::Format_Indexed8, but since the samples per pixel value this should be (non-existent) QImage::Format_Indexed16, causing memory corruption. The fix falls back to the 'normal' way of reading tiff images.

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

Specially crafted font files could cause a single byte heap based buffer overflow (CVE-2011-3193).

Specially crafted grey scale images could cause a heap based buffer overflow (CVE-2011-3194).

Specially crafted font files could cause a single byte heap based buffer overflow (CVE-2011-3193).

Specially crafted grey scale images could cause a heap based buffer overflow (CVE-2011-3194).

The update also fixes the following non-security bugs :

  - fix QFileDialog not showing system files (bnc#669604)

  - fix font fallback handling (bnc#643848)

  - add support for postgresql 8.3 and 9 (bnc#668210)

  - Path added: bnc#592962 - Set application icon.

The remote host is affected by the vulnerability described in GLSA-201311-14 (QtCore, QtGui: Multiple vulnerabilities)

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

    A remote attacker could entice a user to open a specially crafted file       with an application linked against QtCore or QtGui, possibly resulting in       execution of arbitrary code with the privileges of the process or a       Denial of Service condition. Furthermore, a remote attacker might employ       a specially crafted certificate to conduct man-in-the-middle attacks on       SSL connections.
  Workaround :

    There is no known workaround at this time.

From Red Hat Security Advisory 2011:1327 :

An updated frysk package that fixes one security issue is now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having moderate 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.

frysk is an execution-analysis technology implemented using native Java and C++. It provides developers and system administrators with the ability to examine and analyze multi-host, multi-process, and multithreaded systems while they are running. frysk is released as a Technology Preview for Red Hat Enterprise Linux 4.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in the embedded Pango library. If a frysk application were used to debug or trace a process that uses HarfBuzz while it loaded a specially crafted font file, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of frysk are advised to upgrade to this updated package, which contains a backported patch to correct this issue. All running frysk applications must be restarted for this update to take effect.

The remote Oracle Linux 5 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2011-1326 advisory.

    - Prevent buffer overflow errors in harfbuzz module (CVE-2011-3193)

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.

From Red Hat Security Advisory 2011:1325 :

Updated evolution28-pango packages that fix one security issue are now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having moderate 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.

Pango is a library used for the layout and rendering of internationalized text.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in Pango. If a user loaded a specially crafted font file with an application that uses Pango, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of evolution28-pango are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.
After installing this update, you must restart your system or restart the X server for the update to take effect.

From Red Hat Security Advisory 2011:1324 :

Updated qt4 packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Qt 4 is a software toolkit that simplifies the task of writing and maintaining GUI (Graphical User Interface) applications for the X Window System. HarfBuzz is an OpenType text shaping engine.

A flaw in the way Qt 4 expanded certain UTF-8 characters could be used to prevent a Qt 4 based application from properly sanitizing user input. Depending on the application, this could allow an attacker to perform directory traversal, or for web applications, a cross-site scripting (XSS) attack. (CVE-2007-0242)

A buffer overflow flaw was found in the harfbuzz module in Qt 4. If a user loaded a specially crafted font file with an application linked against Qt 4, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of Qt 4 should upgrade to these updated packages, which contain backported patches to correct these issues. All running applications linked against Qt 4 libraries must be restarted for this update to take effect.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-1323 advisory.

    [1:4.6.2-17.1]
    - Resolves: #rhbz737812        fix multiple flaws in Qt        CVE-2011-3193, CVE-2011-3194

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

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

Qt is a software toolkit that simplifies the task of writing and maintaining GUI (Graphical User Interface) applications for the X Window System. HarfBuzz is an OpenType text shaping engine.

A buffer overflow flaw was found in the harfbuzz module in Qt. If a user loaded a specially crafted font file with an application linked against Qt, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

A buffer overflow flaw was found in the way Qt handled certain gray-scale image files. If a user loaded a specially crafted gray-scale image file with an application linked against Qt, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application.
(CVE-2011-3194)

Users of Qt should upgrade to these updated packages, which contain backported patches to correct these issues. All running applications linked against Qt libraries must be restarted for this update to take effect.

Qt 4 is a software toolkit that simplifies the task of writing and maintaining GUI (Graphical User Interface) applications for the X Window System. HarfBuzz is an OpenType text shaping engine.

A flaw in the way Qt 4 expanded certain UTF-8 characters could be used to prevent a Qt 4 based application from properly sanitizing user input. Depending on the application, this could allow an attacker to perform directory traversal, or for web applications, a cross-site scripting (XSS) attack. (CVE-2007-0242)

A buffer overflow flaw was found in the harfbuzz module in Qt 4. If a user loaded a specially crafted font file with an application linked against Qt 4, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of Qt 4 should upgrade to these updated packages, which contain backported patches to correct these issues. All running applications linked against Qt 4 libraries must be restarted for this update to take effect.

Pango is a library used for the layout and rendering of internationalized text.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in Pango. If a user loaded a specially crafted font file with an application that uses Pango, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of pango are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, you must restart your system or restart the X server for the update to take effect.

frysk is an execution-analysis technology implemented using native Java and C++. It provides developers and system administrators with the ability to examine and analyze multi-host, multi-process, and multithreaded systems while they are running. frysk is released as a Technology Preview for Scientific Linux 4.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in the embedded Pango library. If a frysk application were used to debug or trace a process that uses HarfBuzz while it loaded a specially crafted font file, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of frysk are advised to upgrade to this updated package, which contains a backported patch to correct this issue. All running frysk applications must be restarted for this update to take effect.

Pango is a library used for the layout and rendering of internationalized text.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in Pango. If a user loaded a specially crafted font file with an application that uses Pango, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of evolution28-pango are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.
After installing this update, you must restart your system or restart the X server for the update to take effect.

It was discovered that Qt did not properly handle wildcard domain names or IP addresses in the Common Name field of X.509 certificates.
An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. This issue only affected Ubuntu 10.04 LTS. (CVE-2010-5076)

A heap-based buffer overflow was discovered in the HarfBuzz module. If a user were tricked into opening a crafted font file in a Qt application, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2011-3193)

It was discovered that Qt did not properly handle greyscale TIFF images. If a Qt application could be made to process a crafted TIFF file, an attacker could cause a denial of service. (CVE-2011-3194).

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.

The following security issues have been fixed :

  - Specially crafted font files could cause a single byte     heap based buffer overflow. (CVE-2011-3193)

  - Specially crafted grey scale images could cause a     heap-based buffer overflow. (CVE-2011-3194)

  - SSL servers could run into an endless loop     (CVE-2010-2621) The update also fixes the following     non-security bugs :

  - QFileDialog, to show system files (bnc#669604),

  - matching of SSL certificates mentioning IP addresses     (bnc#637293),

  - the font fallback handling (bnc#643848),

  - handling of transparent monochromatic pixmaps     (bnc#610578),

  - a crash of QtWebKit with flash player (bnc#613818)

An updated frysk package that fixes one security issue is now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having moderate 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.

frysk is an execution-analysis technology implemented using native Java and C++. It provides developers and system administrators with the ability to examine and analyze multi-host, multi-process, and multithreaded systems while they are running. frysk is released as a Technology Preview for Red Hat Enterprise Linux 4.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in the embedded Pango library. If a frysk application were used to debug or trace a process that uses HarfBuzz while it loaded a specially crafted font file, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of frysk are advised to upgrade to this updated package, which contains a backported patch to correct this issue. All running frysk applications must be restarted for this update to take effect.

Updated evolution28-pango packages that fix one security issue are now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having moderate 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.

Pango is a library used for the layout and rendering of internationalized text.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in Pango. If a user loaded a specially crafted font file with an application that uses Pango, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of evolution28-pango are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.
After installing this update, you must restart your system or restart the X server for the update to take effect.

Updated qt packages that fix two security issues are now available for Red Hat Enterprise Linux 6 FasTrack.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Qt is a software toolkit that simplifies the task of writing and maintaining GUI (Graphical User Interface) applications for the X Window System. HarfBuzz is an OpenType text shaping engine.

A buffer overflow flaw was found in the harfbuzz module in Qt. If a user loaded a specially crafted font file with an application linked against Qt, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

A buffer overflow flaw was found in the way Qt handled certain gray-scale image files. If a user loaded a specially crafted gray-scale image file with an application linked against Qt, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application.
(CVE-2011-3194)

Users of Qt should upgrade to these updated packages, which contain backported patches to correct these issues. All running applications linked against Qt libraries must be restarted for this update to take effect.

The remote Redhat Enterprise Linux 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2011:1327 advisory.

    frysk is an execution-analysis technology implemented using native Java and     C++. It provides developers and system administrators with the ability to     examine and analyze multi-host, multi-process, and multithreaded systems     while they are running. frysk is released as a Technology Preview for Red     Hat Enterprise Linux 4.

    A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping     engine used in the embedded Pango library. If a frysk application were used     to debug or trace a process that uses HarfBuzz while it loaded a     specially-crafted font file, it could cause the application to crash or,     possibly, execute arbitrary code with the privileges of the user running     the application. (CVE-2011-3193)

    Users of frysk are advised to upgrade to this updated package, which     contains a backported patch to correct this issue. All running frysk     applications must be restarted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

Updated pango packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate 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.

Pango is a library used for the layout and rendering of internationalized text.

A buffer overflow flaw was found in HarfBuzz, an OpenType text shaping engine used in Pango. If a user loaded a specially crafted font file with an application that uses Pango, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of pango are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, you must restart your system or restart the X server for the update to take effect.

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2011:1325 advisory.

  - qt/harfbuzz buffer overflow (CVE-2011-3193)

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-2011:1324 advisory.

    Qt 4 is a software toolkit that simplifies the task of writing and     maintaining GUI (Graphical User Interface) applications for the X Window     System. HarfBuzz is an OpenType text shaping engine.

    A flaw in the way Qt 4 expanded certain UTF-8 characters could be used to     prevent a Qt 4 based application from properly sanitizing user input.
    Depending on the application, this could allow an attacker to perform     directory traversal, or for web applications, a cross-site scripting (XSS)     attack. (CVE-2007-0242)

    A buffer overflow flaw was found in the harfbuzz module in Qt 4. If a user     loaded a specially-crafted font file with an application linked against Qt     4, it could cause the application to crash or, possibly, execute arbitrary     code with the privileges of the user running the application.
    (CVE-2011-3193)

    Users of Qt 4 should upgrade to these updated packages, which contain     backported patches to correct these issues. All running applications linked     against Qt 4 libraries must be restarted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2011:1323 advisory.

  - qt/harfbuzz buffer overflow (CVE-2011-3193)

  - qt buffer overflow in greyscale images (CVE-2011-3194)

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

Updated qt4 packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Qt 4 is a software toolkit that simplifies the task of writing and maintaining GUI (Graphical User Interface) applications for the X Window System. HarfBuzz is an OpenType text shaping engine.

A flaw in the way Qt 4 expanded certain UTF-8 characters could be used to prevent a Qt 4 based application from properly sanitizing user input. Depending on the application, this could allow an attacker to perform directory traversal, or for web applications, a cross-site scripting (XSS) attack. (CVE-2007-0242)

A buffer overflow flaw was found in the harfbuzz module in Qt 4. If a user loaded a specially crafted font file with an application linked against Qt 4, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3193)

Users of Qt 4 should upgrade to these updated packages, which contain backported patches to correct these issues. All running applications linked against Qt 4 libraries must be restarted for this update to take effect.

ID	Name	Product	Family	Severity
181021	Oracle Linux 6 : qt (ELSA-2011-1328)	Nessus	Oracle Linux Local Security Checks	high
82100	Debian DLA-117-1 : qt4-x11 security update	Nessus	Debian Local Security Checks	high
75917	openSUSE Security Update : libQtWebKit-devel (openSUSE-SU-2011:1120-1)	Nessus	SuSE Local Security Checks	high
75609	openSUSE Security Update : libQtWebKit-devel (openSUSE-SU-2011:1119-1)	Nessus	SuSE Local Security Checks	high
71073	GLSA-201311-14 : QtCore, QtGui: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
68357	Oracle Linux 4 : frysk (ELSA-2011-1327)	Nessus	Oracle Linux Local Security Checks	high
68356	Oracle Linux 5 : pango (ELSA-2011-1326)	Nessus	Oracle Linux Local Security Checks	high
68355	Oracle Linux 4 : evolution28-pango (ELSA-2011-1325)	Nessus	Oracle Linux Local Security Checks	high
68354	Oracle Linux 5 : qt4 (ELSA-2011-1324)	Nessus	Oracle Linux Local Security Checks	high
68353	Oracle Linux 6 : qt (ELSA-2011-1323)	Nessus	Oracle Linux Local Security Checks	high
61141	Scientific Linux Security Update : qt on SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
61140	Scientific Linux Security Update : qt4 on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
61139	Scientific Linux Security Update : pango on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
61138	Scientific Linux Security Update : frysk on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
61137	Scientific Linux Security Update : evolution28-pango on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
59957	Ubuntu 10.04 LTS / 11.04 : qt4-x11 vulnerabilities (USN-1504-1)	Nessus	Ubuntu Local Security Checks	high
57112	SuSE 11.1 Security Update : Qt (SAT Patch Number 5131)	Nessus	SuSE Local Security Checks	high
56276	CentOS 4 : frysk (CESA-2011:1327)	Nessus	CentOS Local Security Checks	high
56275	CentOS 4 : evolution28-pango (CESA-2011:1325)	Nessus	CentOS Local Security Checks	high
56255	RHEL 6 : qt (RHSA-2011:1328)	Nessus	Red Hat Local Security Checks	high
56254	RHEL 4 : frysk (RHSA-2011:1327)	Nessus	Red Hat Local Security Checks	critical
56253	RHEL 5 : pango (RHSA-2011:1326)	Nessus	Red Hat Local Security Checks	high
56252	RHEL 4 : evolution28-pango (RHSA-2011:1325)	Nessus	Red Hat Local Security Checks	critical
56251	RHEL 5 : qt4 (RHSA-2011:1324)	Nessus	Red Hat Local Security Checks	medium
56250	RHEL 6 : qt (RHSA-2011:1323)	Nessus	Red Hat Local Security Checks	critical
56249	CentOS 5 : pango (CESA-2011:1326)	Nessus	CentOS Local Security Checks	high
56248	CentOS 5 : qt4 (CESA-2011:1324)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2011-3193

critical

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

critical

high

critical

medium

critical

high

high