RHBA-2012:1029 - Bug Fix Advisory

Topic

Updated file packages that fix multiple bugs are now available for Red Hat
Enterprise Linux 5.

Description

The File utility is used to identify a particular file according to the type of
data contained in the file.

This update fixes the following bugs:

• Prior to this update, the swap signature on the Itanium architecture was not

stored in the same place as on other architectures. As a consequence, the file
utility failed to detect the swap signature on Itanium. This update adds a new
"magic" pattern to detect the swap signature on Itanium architecture.
(BZ#758105)

• Prior to this update, the "magic" pattern to detect Infocom Game Data was too

weak. As a consequence, Some files were wrongly identified as Infocom Game Data
when they were actually in different format. This update modifies the Infocom
Game Data "magic" pattern so only valid Infocom Game Data files are detected by
this pattern. (BZ#789830)

• Prior to this update, the file utility did not contain a "magic" pattern to

detect zip64 (zip 3.0) files. As a consequence, the file utility failed to
detect archives in the zip64 format. This update adds a new "magic" pattern to
detect the zip64 format. (BZ#758631)

• Prior to this update, the file utility did not contain a "magic" pattern to

detect WebM video files. As a consequence, the file utility failed to detect
WebM video files. This update adds a new "magic" pattern to detect the WebM
files. (BZ#758634)

• Prior to this update, the file utility did not contain a "magic" pattern to

detect LZMA archives. As a consequence, the file utility failed to detect
archives in LZMA format were not detected. This update adds a new "magic"
pattern to detect the LZMA files. (BZ#809801)

• Prior to this update, the "magic" pattern to detect Dell BIOS headers was

outdated. As a consequence, the file utility failed to detect newer BIOS
formats. This update modifies the ""magic"" pattern to detect also new formats
of Dell BIOS correctly. (BZ#826899)

• Prior to this update, the file utility contained ""magic"" patterns that

incorrectly detected files according to one byte only. As a consequence, Unicode
text files that contained the particular byte in a particular position could be
incorrectly recognized as DOS executable files. This update removes the
problematic patterns. Patterns that match less than 16 bits are no longer
accepted, and the utility no longer detects Unicode files as DOS executables.
(BZ#826901)

All users of the file utility are advised to upgrade to these updated packages,
which fix these bugs.

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 758105 - file is not able to detect swap signature on ia64
• BZ - 758631 - file command can't identify the zip64 format correctly.
• BZ - 758634 - file doesn't recognize webm content
• BZ - 826901 - A Korean text file is classified as a DOS executable file

CVEs

(none)

References

(none)