Multiple buffer overflows in demo programs in FreeType before 2.4.0 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted font file.

This update of freetype2 fixes several vulnerabilities that could lead to remote system compromise by executing arbitrary code with user privileges :

  - CVE-2010-1797: stack-based buffer overflow while     processing CFF opcodes

  - CVE-2010-2497: integer underflow

  - CVE-2010-2498: invalid free

  - CVE-2010-2499: buffer overflow

  - CVE-2010-2500: integer overflow

  - CVE-2010-2519: heap buffer overflow

  - CVE-2010-2520: heap buffer overflow

  - CVE-2010-2527: buffer overflows in the freetype demo

  - CVE-2010-2541: buffer overflow in ftmulti demo program

  - CVE-2010-2805: improper bounds checking

  - CVE-2010-2806: improper bounds checking

  - CVE-2010-2807: improper type comparisons

  - CVE-2010-2808: memory corruption flaw by processing     certain LWFN fonts

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2010-0578 advisory.

    - Modify freetype-2.2.1-CVE-2010-2519.patch (additional fix)         (If the type of the POST fragment is 0, the segment is completely ignored)
    - Add freetype-2.2.1-CVE-2010-2527.patch         (Use precision for '%s' where appropriate to avoid buffer overflows)
    - Add freetype-2.2.1-CVE-2010-2498.patch         (Assure that 'end_point' is not larger than 'glyph->num_points')
    - Add freetype-2.2.1-CVE-2010-2499.patch         (Check the buffer size during gathering PFB fragments)
    - Add freetype-2.2.1-CVE-2010-2500.patch         (Use smaller threshold values for 'width' and 'height')
    - Add freetype-2.2.1-CVE-2010-2519.patch         (Check 'rlen' the length of fragment declared in the POST fragment header)

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.

From Red Hat Security Advisory 2010:0577 :

Updated freetype packages that fix various security issues are now available for Red Hat Enterprise Linux 3.

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

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. These packages provide both the FreeType 1 and FreeType 2 font engines.

An integer overflow flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2500)

Several buffer overflow flaws were found in the FreeType demo applications. If a user loaded a carefully-crafted font file with a demo application, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2527, CVE-2010-2541)

Red Hat would like to thank Robert Swiecki of the Google Security Team for the discovery of the CVE-2010-2500 and CVE-2010-2527 issues.

Note: All of the issues in this erratum only affect the FreeType 2 font engine.

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

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. These packages provide both the FreeType 1 and FreeType 2 font engines.

An integer overflow flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2500)

Several buffer overflow flaws were found in the FreeType demo applications. If a user loaded a carefully-crafted font file with a demo application, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2527, CVE-2010-2541)

We would like to thank Robert Swiecki of the Google Security Team for the discovery of the CVE-2010-2500 and CVE-2010-2527 issues.

Note: All of the issues in this erratum only affect the FreeType 2 font engine.

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

An invalid memory management flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2498)

An integer overflow flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2500)

Several buffer overflow flaws were found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2499, CVE-2010-2519)

Several buffer overflow flaws were found in the FreeType demo applications. If a user loaded a carefully-crafted font file with a demo application, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2527, CVE-2010-2541)

Note: All of the issues in this erratum only affect the FreeType 2 font engine.

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

File List

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 several vulnerabilities that could lead to remote system compromise by executing arbitrary code with user privileges :

  - stack-based buffer overflow while processing CFF     opcodes. (CVE-2010-1797)

  - integer underflow. (CVE-2010-2497)

  - invalid free. (CVE-2010-2498)

  - buffer overflow. (CVE-2010-2499)

  - integer overflow. (CVE-2010-2500)

  - heap buffer overflow. (CVE-2010-2519)

  - heap buffer overflow. (CVE-2010-2520)

  - buffer overflows in the freetype demo. (CVE-2010-2527)

  - buffer overflow in ftmulti demo program. (CVE-2010-2541)

  - improper bounds checking. (CVE-2010-2805)

  - improper bounds checking. (CVE-2010-2806)

  - improper type comparisons. (CVE-2010-2807)

  - memory corruption flaw by processing certain LWFN fonts.
    (CVE-2010-2808)

- Mon Oct 4 2010 Marek Kasik <mkasik at redhat.com>     2.3.11-6

    - Add freetype-2.3.11-CVE-2010-2805.patch (Fix       comparison.)

  - Add freetype-2.3.11-CVE-2010-2806.patch (Protect against     negative string_size. Fix comparison.)

  - Add freetype-2.3.11-CVE-2010-2808.patch (Check the total     length of collected POST segments.)

  - Add freetype-2.3.11-CVE-2010-3311.patch (Don't seek     behind end of stream.)

  - Resolves: #638522

    - Mon Oct 4 2010 Marek Kasik <mkasik at redhat.com>       2.3.11-5

    - Add freetype-2.3.11-CVE-2010-1797.patch (Check stack       after execution of operations too. Skip the       evaluations of the values in decoder, if       cff_decoder_parse_charstrings() returns any error.)

  - Resolves: #621627

    - Fri Oct 1 2010 Marek Kasik <mkasik at redhat.com>       2.3.11-4

    - Add freetype-2.3.11-CVE-2010-2498.patch (Assure that       `end_point' is not larger than `glyph->num_points')

  - Add freetype-2.3.11-CVE-2010-2499.patch (Check the     buffer size during gathering PFB fragments)

  - Add freetype-2.3.11-CVE-2010-2500.patch (Use smaller     threshold values for `width' and `height')

  - Add freetype-2.3.11-CVE-2010-2519.patch (Check `rlen'     the length of fragment declared in the POST fragment     header)

  - Add freetype-2.3.11-CVE-2010-2520.patch (Fix bounds     check)

  - Add freetype-2.3.11-CVE-2010-2527.patch (Use precision     for `%s' where appropriate to avoid buffer overflows)

  - Add freetype-2.3.11-CVE-2010-2541.patch (Avoid overflow     when dealing with names of axes)

  - Resolves: #613299

    - Thu Dec 3 2009 Behdad Esfahbod <behdad at redhat.com>       2.3.11-3

    - Add freetype-2.3.11-more-demos.patch

    - New demo programs ftmemchk, ftpatchk, and fttimer

    - Thu Dec 3 2009 Behdad Esfahbod <behdad at redhat.com>       2.3.11-2

    - Second try. Drop upstreamed patches.

    - Thu Dec 3 2009 Behdad Esfahbod <behdad at redhat.com>       2.3.11-1

    - 2.3.11

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.

- Mon Oct 4 2010 Marek Kasik <mkasik at redhat.com>     2.3.11-6

    - Add freetype-2.3.11-CVE-2010-2805.patch (Fix       comparison.)

  - Add freetype-2.3.11-CVE-2010-2806.patch (Protect against     negative string_size. Fix comparison.)

  - Add freetype-2.3.11-CVE-2010-2808.patch (Check the total     length of collected POST segments.)

  - Add freetype-2.3.11-CVE-2010-3311.patch (Don't seek     behind end of stream.)

  - Resolves: #638522

    - Mon Oct 4 2010 Marek Kasik <mkasik at redhat.com>       2.3.11-5

    - Add freetype-2.3.11-CVE-2010-1797.patch (Check stack       after execution of operations too. Skip the       evaluations of the values in decoder, if       cff_decoder_parse_charstrings() returns any error.)

  - Resolves: #621627

    - Fri Oct 1 2010 Marek Kasik <mkasik at redhat.com>       2.3.11-4

    - Add freetype-2.3.11-CVE-2010-2498.patch (Assure that       `end_point' is not larger than `glyph->num_points')

  - Add freetype-2.3.11-CVE-2010-2499.patch (Check the     buffer size during gathering PFB fragments)

  - Add freetype-2.3.11-CVE-2010-2500.patch (Use smaller     threshold values for `width' and `height')

  - Add freetype-2.3.11-CVE-2010-2519.patch (Check `rlen'     the length of fragment declared in the POST fragment     header)

  - Add freetype-2.3.11-CVE-2010-2520.patch (Fix bounds     check)

  - Add freetype-2.3.11-CVE-2010-2527.patch (Use precision     for `%s' where appropriate to avoid buffer overflows)

  - Add freetype-2.3.11-CVE-2010-2541.patch (Avoid overflow     when dealing with names of axes)

  - Resolves: #613299

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.

Updated freetype packages that fix various security issues are now available for Red Hat Enterprise Linux 3.

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

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. These packages provide both the FreeType 1 and FreeType 2 font engines.

An integer overflow flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2500)

Several buffer overflow flaws were found in the FreeType demo applications. If a user loaded a carefully-crafted font file with a demo application, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2527, CVE-2010-2541)

Red Hat would like to thank Robert Swiecki of the Google Security Team for the discovery of the CVE-2010-2500 and CVE-2010-2527 issues.

Note: All of the issues in this erratum only affect the FreeType 2 font engine.

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

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

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

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 provide only the FreeType 2 font engine.

An invalid memory management flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2498)

An integer overflow flaw was found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2500)

Several buffer overflow flaws were found in the way the FreeType font engine processed font files. If a user loaded a carefully-crafted font file with an application linked against FreeType, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2499, CVE-2010-2519)

Several buffer overflow flaws were found in the FreeType demo applications. If a user loaded a carefully-crafted font file with a demo application, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2010-2527, CVE-2010-2541)

Red Hat would like to thank Robert Swiecki of the Google Security Team for the discovery of the CVE-2010-2498, CVE-2010-2500, CVE-2010-2499, CVE-2010-2519, and CVE-2010-2527 issues.

Note: All of the issues in this erratum only affect the FreeType 2 font engine.

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

Robert Swiecki discovered that FreeType did not correctly handle certain malformed font files. If a user were tricked into using a specially crafted font file, a remote attacker could execute arbitrary code with user privileges.

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.

Robert Swiecki discovered several vulnerabilities in the FreeType font library, which could lead to the execution of arbitrary code if a malformed font file is processed.

Also, several buffer overflows were found in the included demo programs.

ID	Name	Product	Family	Severity
75578	openSUSE Security Update : libfreetype6 (openSUSE-SU-2010:0549-1)	Nessus	SuSE Local Security Checks	high
68075	Oracle Linux 5 : freetype (ELSA-2010-0578)	Nessus	Oracle Linux Local Security Checks	high
68074	Oracle Linux 3 : freetype (ELSA-2010-0577)	Nessus	Oracle Linux Local Security Checks	medium
60826	Scientific Linux Security Update : freetype on SL3	Nessus	Scientific Linux Local Security Checks	medium
60825	Scientific Linux Security Update : freetype for SL4 , SL5	Nessus	Scientific Linux Local Security Checks	medium
57651	GLSA-201201-09 : FreeType: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
50905	SuSE 11 / 11.1 Security Update : freetype2 (SAT Patch Numbers 2914 / 2919)	Nessus	SuSE Local Security Checks	high
50437	Fedora 12 : freetype-2.3.11-6.fc12 (2010-15785)	Nessus	Fedora Local Security Checks	high
50026	Fedora 13 : freetype-2.3.11-6.fc13 (2010-15705)	Nessus	Fedora Local Security Checks	high
49854	SuSE 10 Security Update : freetype2 (ZYPP Patch Number 7121)	Nessus	SuSE Local Security Checks	high
48900	SuSE9 Security Update : freetype2 (YOU Patch Number 12630)	Nessus	SuSE Local Security Checks	high
48755	openSUSE Security Update : freetype2 (openSUSE-SU-2010:0549-1)	Nessus	SuSE Local Security Checks	high
48753	openSUSE Security Update : freetype2 (openSUSE-SU-2010:0549-1)	Nessus	SuSE Local Security Checks	high
48343	CentOS 3 : freetype (CESA-2010:0577)	Nessus	CentOS Local Security Checks	medium
48217	CentOS 4 / 5 : freetype (CESA-2010:0578)	Nessus	CentOS Local Security Checks	medium
48212	RHEL 4 / 5 : freetype (RHSA-2010:0578)	Nessus	Red Hat Local Security Checks	medium
48211	RHEL 3 : freetype (RHSA-2010:0577)	Nessus	Red Hat Local Security Checks	medium
47778	Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 / 10.04 LTS : freetype vulnerabilities (USN-963-1)	Nessus	Ubuntu Local Security Checks	medium
47735	Debian DSA-2070-1 : freetype - several vulnerabilities	Nessus	Debian Local Security Checks	medium

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CVE-2010-2527

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