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Security Advisory Updated unzip packages fix trojan vulnerability

Advisory: RHSA-2003:199-14
Type: Security Advisory
Severity: N/A
Issued on: 2003-07-01
Last updated on: 2003-08-15
Affected Products: Red Hat Linux 7.1
Red Hat Linux 7.1 for iSeries
Red Hat Linux 7.1 for pSeries
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0
Red Hat Linux 9
CVEs (cve.mitre.org): CVE-2003-0282

Details

Updated unzip packages resolving a vulnerability allowing arbitrary files
to be overwritten are now available.

[Updated 15 August 2003]
Ben Laurie found that the original patch to fix this issue missed a case
where the path component included a quoted slash. These updated packages
contain a new patch that corrects this issue.

The unzip utility is used for manipulating archives, which are multiple
files stored inside of a single file.

A vulnerabilitiy in unzip version 5.50 and earlier allows attackers to
overwrite arbitrary files during archive extraction by placing invalid
(non-printable) characters between two "." characters. These non-printable
characters are filtered, resulting in a ".." sequence. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2003-0282 to this issue.

This erratum includes a patch ensuring that non-printable characters do not
make it possible for a malicious .zip file to write to parent directories
unless the "-:" command line parameter is specified.

Users of unzip are advised to upgrade to these updated packages, which are
not vulnerable to this issue.


Solution

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Updated packages

Red Hat Linux 7.1

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/SRPMS/unzip-5.50-31.src.rpm
Missing file
    MD5: 7726fd0a5026763537b7d947e84fa8a5
 
IA-32:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/i386/unzip-5.50-31.i386.rpm
Missing file
    MD5: 5528f5705d056ceeda5ad97e6ade46f8
 
Red Hat Linux 7.1 for iSeries

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/SRPMS/unzip-5.50-31.src.rpm
Missing file
    MD5: 7726fd0a5026763537b7d947e84fa8a5
 
iSeries:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/ppc/unzip-5.50-31.ppc.rpm
Missing file
    MD5: 1b56998c114550b761819d63bd5ced3e
 
Red Hat Linux 7.1 for pSeries

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/SRPMS/unzip-5.50-31.src.rpm
Missing file
    MD5: 7726fd0a5026763537b7d947e84fa8a5
 
pSeries:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/ppc/unzip-5.50-31.ppc.rpm
Missing file
    MD5: 1b56998c114550b761819d63bd5ced3e
 
Red Hat Linux 7.2

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/SRPMS/unzip-5.50-31.src.rpm
Missing file
    MD5: 7726fd0a5026763537b7d947e84fa8a5
 
IA-32:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/i386/unzip-5.50-31.i386.rpm
Missing file
    MD5: 5528f5705d056ceeda5ad97e6ade46f8
 
IA-64:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/ia64/unzip-5.50-31.ia64.rpm
Missing file
    MD5: 451f973b77c2ced03d344495774cd253
 
Red Hat Linux 7.3

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/SRPMS/unzip-5.50-31.src.rpm
Missing file
    MD5: 7726fd0a5026763537b7d947e84fa8a5
 
IA-32:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-31/i386/unzip-5.50-31.i386.rpm
Missing file
    MD5: 5528f5705d056ceeda5ad97e6ade46f8
 
Red Hat Linux 8.0

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-32/SRPMS/unzip-5.50-32.src.rpm
Missing file
    MD5: a16d8797347c730ad0f2e6892f881eb3
 
IA-32:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-32/i386/unzip-5.50-32.i386.rpm
Missing file
    MD5: e708a3b370ec0febd115dca3dd4da0f4
 
Red Hat Linux 9

SRPMS:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-33/SRPMS/unzip-5.50-33.src.rpm
Missing file
    MD5: 5b4b902fde88ab017acb2c0c7f48b2c2
 
IA-32:
ftp://updates.redhat.com/rhn/repository/NULL/unzip/5.50-33/i386/unzip-5.50-33.i386.rpm
Missing file
    MD5: e6d52c854a8ebba7dacb678a5edb5cb8
 

Bugs fixed (see bugzilla for more information)

97301 - vulnerability in unzip 5.50 allows malicious zip file to write to ../


References


Keywords

characters, control, unzip


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https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/