Security update for BZIP2

Knowledgebase

(Last modified: 29JUL2002)

solutions Security update for BZIP2 SuSE Linux Maintenance Web (6e8cc5a72d3d746459f4f497b93e7d55)

Applies to

Product(s): SuSE Linux Database Server
SuSE Linux Admin-CD for Firewall
SuSE Linux Enterprise Server 7 for IBM zSeries
SuSE eMail Server III
SuSE Linux Enterprise Server 7 for PowerPC

SuSE Linux Enterprise Server 7 for IA32
SuSE Linux Enterprise Server 7 for IA64
SuSE Linux Enterprise Server 7 for S/390 and zSeries
SuSE Linux Enterprise Server for S/390
SuSE eMail Server 3.1
SuSE Linux Office Server
SuSE Firewall Adminhost VPN
SuSE Linux Connectivity Server

Package: bzip
Release: 20020729
Obsoletes: none

Indications

This update should be installed.

Contraindications

None.

Problem description

This update fixes some security bugs of the bzip2 utility:
When decompressing archive the utility failed to use the O_EXCL flag which could lead to the utility overwriting files without warning.
In addition the utility did not securely create new files causing a race condition between creating the file and setting the correct permissions.
When compressing a file pointed to by a symbolic link, the
bzip2 utility incorrectly stored the permissions of
the symbolic link instead of the file. This may result in potentially
lax file permissions (rwxr-xr-x), causing the decompressed file to be
world-readable.

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using this command:


rpm -Uvh bzip.rpm

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.

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