Issued:

2008-02-21

Updated:

2008-02-21

RHSA-2008:0134 - Moderate: tcltk security update

Synopsis

Moderate: tcltk security update

Type/Severity

Security Advisory Moderate

Topic

Updated tcltk packages that fix a security issue are now available for Red Hat Enterprise Linux 2.1, and 3.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Description

Tcl is a scripting language designed for embedding into other applications and for use with Tk, a widget set.

An input validation flaw was discovered in Tk's GIF image handling. A code-size value read from a GIF image was not properly validated before being used, leading to a buffer overflow. A specially crafted GIF file could use this to cause a crash or, potentially, execute code with the privileges of the application using the Tk graphical toolkit. (CVE-2008-0553)

A buffer overflow flaw was discovered in Tk's animated GIF image handling. An animated GIF containing an initial image smaller than subsequent images could cause a crash or, potentially, execute code with the privileges of the application using the Tk library. (CVE-2007-5378)

A flaw in the Tcl regular expression handling engine was discovered by Will Drewry. This flaw, first discovered in the Tcl regular expression engine used in the PostgreSQL database server, resulted in an infinite loop when processing certain regular expressions. (CVE-2007-4772)

All users are advised to upgrade to these updated packages which contain backported patches which resolve these issues.

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

Updated Packages

• expect-devel-5.38.0-92.8.ppc.rpm
• tk-8.3.5-92.8.s390.rpm
• itcl-3.2-75.ia64.rpm
• tk-devel-8.3.5-92.8.ia64.rpm
• tcl-devel-8.3.5-92.8.i386.rpm
• tix-8.2.0b1-75.ia64.rpm
• itcl-3.2-92.8.s390.rpm
• tcl-8.3.5-92.8.s390x.rpm
• tclx-8.3-92.8.i386.rpm
• tk-devel-8.3.5-92.8.i386.rpm
• tcl-devel-8.3.5-92.8.s390.rpm
• itcl-3.2-92.8.x86_64.rpm
• tix-8.1.4-92.8.x86_64.rpm
• tclx-8.3-92.8.s390.rpm
• tk-8.3.5-92.8.s390x.rpm
• tcl-8.3.3-75.ia64.rpm
• itcl-3.2-92.8.i386.rpm
• expect-5.38.0-92.8.s390x.rpm
• tcl-devel-8.3.5-92.8.s390x.rpm
• expect-devel-5.38.0-92.8.x86_64.rpm
• tix-8.1.4-92.8.s390x.rpm
• itcl-3.2-92.8.s390x.rpm
• tk-8.3.5-92.8.ppc64.rpm
• expect-5.38.0-75.i386.rpm
• expect-devel-5.38.0-92.8.s390x.rpm
• tclx-8.3-92.8.ia64.rpm
• tcl-8.3.5-92.8.ppc.rpm
• tcl-devel-8.3.5-92.8.ppc.rpm
• tcl-devel-8.3.5-92.8.x86_64.rpm
• expect-5.38.0-92.8.ia64.rpm
• tclx-8.3-92.8.x86_64.rpm
• tix-8.1.4-92.8.ia64.rpm
• tk-8.3.3-75.ia64.rpm
• tk-devel-8.3.5-92.8.s390.rpm
• tclx-8.3-75.i386.rpm
• tcllib-1.0-75.ia64.rpm
• itcl-3.2-92.8.ia64.rpm
• tk-8.3.5-92.8.ppc.rpm
• expect-5.38.0-75.ia64.rpm
• tcl-8.3.5-92.8.i386.rpm
• tix-8.2.0b1-75.i386.rpm
• tix-8.1.4-92.8.i386.rpm
• expect-devel-5.38.0-92.8.s390.rpm
• itcl-3.2-92.8.ppc.rpm
• tcl-8.3.3-75.i386.rpm
• tcl-8.3.5-92.8.ia64.rpm
• expect-5.38.0-92.8.s390.rpm
• tk-8.3.5-92.8.ia64.rpm
• expect-5.38.0-92.8.x86_64.rpm
• expect-devel-5.38.0-92.8.ia64.rpm
• expect-5.38.0-92.8.i386.rpm
• tk-8.3.5-92.8.x86_64.rpm
• tk-8.3.5-92.8.i386.rpm
• tcl-8.3.5-92.8.x86_64.rpm
• tix-8.1.4-92.8.ppc.rpm
• tk-devel-8.3.5-92.8.x86_64.rpm
• tclx-8.3-92.8.s390x.rpm
• tk-devel-8.3.5-92.8.s390x.rpm
• tcl-8.3.5-92.8.ppc64.rpm
• tcllib-1.0-75.i386.rpm
• tcl-8.3.5-92.8.s390.rpm
• itcl-3.2-75.i386.rpm
• expect-devel-5.38.0-92.8.i386.rpm
• tix-8.1.4-92.8.s390.rpm
• tcl-devel-8.3.5-92.8.ia64.rpm
• tclx-8.3-75.ia64.rpm
• expect-5.38.0-92.8.ppc.rpm
• tk-8.3.3-75.i386.rpm
• tclx-8.3-92.8.ppc64.rpm
• tclx-8.3-92.8.ppc.rpm
• tk-devel-8.3.5-92.8.ppc.rpm

Fixes

• This content is not included.BZ - 316511
• This content is not included.BZ - 332021
• This content is not included.BZ - 431518

CVEs

• CVE-2007-5378
• CVE-2008-0553
• CVE-2007-4772

References

• http://www.redhat.com/security/updates/classification/#moderate

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.