Moderate: vixie-cron security update

Advisory:	RHSA-2007:0345-3
Type:	Security Advisory
Severity:	Moderate
Issued on:	2007-05-17
Last updated on:	2007-05-17
Affected Products:	Red Hat Desktop (v. 3) Red Hat Desktop (v. 4) Red Hat Enterprise Linux (v. 5 server) Red Hat Enterprise Linux AS (v. 3) Red Hat Enterprise Linux AS (v. 4) Red Hat Enterprise Linux Desktop (v. 5 client) Red Hat Enterprise Linux ES (v. 3) Red Hat Enterprise Linux ES (v. 4) Red Hat Enterprise Linux WS (v. 3) Red Hat Enterprise Linux WS (v. 4)
OVAL:	N/A
CVEs (cve.mitre.org):	CVE-2007-1856

Details

Updated vixie-cron packages that fix a denial of service issue are now
available.

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

The vixie-cron package contains the Vixie version of cron. Cron is a
standard UNIX daemon that runs specified programs at scheduled times.

Raphael Marichez discovered a denial of service bug in the way vixie-cron
verifies crontab file integrity. A local user with the ability to create a
hardlink to /etc/crontab can prevent vixie-cron from executing certain
system cron jobs. (CVE-2007-1856)

All users of vixie-cron should upgrade to these updated packages, which
contain a backported patch to correct this issue.

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
http://kbase.redhat.com/faq/FAQ_58_10188

Updated packages

Red Hat Desktop (v. 3)

SRPMS:
vixie-cron-4.1-19.EL3.src.rpm File outdated by: RHBA-2007:1001	`7c765917fa13d34ca705284d0a51d16e`

IA-32:
vixie-cron-4.1-19.EL3.i386.rpm File outdated by: RHBA-2007:1001	`ea525e4a8c8dc818b9e113c02a7e4c48`

x86_64:
vixie-cron-4.1-19.EL3.x86_64.rpm File outdated by: RHBA-2007:1001	`c2440f24a81ded632ef8ce71c5f379a6`

Red Hat Desktop (v. 4)

SRPMS:
vixie-cron-4.1-47.EL4.src.rpm File outdated by: RHBA-2008:0115	`c963050603bd83341aa5512719bcd6e1`

IA-32:
vixie-cron-4.1-47.EL4.i386.rpm File outdated by: RHBA-2008:0115	`e50b7208f6e67ef36a941a9d53dd4ecd`

x86_64:
vixie-cron-4.1-47.EL4.x86_64.rpm File outdated by: RHBA-2008:0115	`9cdec79f5fd5c4daaec883aa70bb6432`

Red Hat Enterprise Linux (v. 5 server)

SRPMS:
vixie-cron-4.1-70.el5.src.rpm File outdated by: RHBA-2007:0564	`91b16cc530bd52916de05ebf3a291ec3`

IA-32:
vixie-cron-4.1-70.el5.i386.rpm File outdated by: RHBA-2007:0564	`bf66188eda08c4e4410854a118448fce`

IA-64:
vixie-cron-4.1-70.el5.ia64.rpm File outdated by: RHBA-2007:0564	`4bd5c5c644d7cae8a7a35ee8a8db1fe3`

PPC:
vixie-cron-4.1-70.el5.ppc.rpm File outdated by: RHBA-2007:0564	`ccd2a860b388dcf0b8174ac301813692`

s390x:
vixie-cron-4.1-70.el5.s390x.rpm File outdated by: RHBA-2007:0564	`308a141f06dcf269d3fcbf80d464cd9d`

x86_64:
vixie-cron-4.1-70.el5.x86_64.rpm File outdated by: RHBA-2007:0564	`2d9c6bdffb703c8ecdfb5bbac74a193e`

Red Hat Enterprise Linux AS (v. 3)

SRPMS:
vixie-cron-4.1-19.EL3.src.rpm File outdated by: RHBA-2007:1001	`7c765917fa13d34ca705284d0a51d16e`

IA-32:
vixie-cron-4.1-19.EL3.i386.rpm File outdated by: RHBA-2007:1001	`ea525e4a8c8dc818b9e113c02a7e4c48`

IA-64:
vixie-cron-4.1-19.EL3.ia64.rpm File outdated by: RHBA-2007:1001	`dbd7433ff15f0aaf005cd1bbed789112`

PPC:
vixie-cron-4.1-19.EL3.ppc.rpm File outdated by: RHBA-2007:1001	`097b5ff35bfae9dc80600b1c5c625b28`

s390:
vixie-cron-4.1-19.EL3.s390.rpm File outdated by: RHBA-2007:1001	`825a473c9476f6c4c0998c9b37c87584`

s390x:
vixie-cron-4.1-19.EL3.s390x.rpm File outdated by: RHBA-2007:1001	`a69ee247f2c81ef9baa7636c8f695ab5`

x86_64:
vixie-cron-4.1-19.EL3.x86_64.rpm File outdated by: RHBA-2007:1001	`c2440f24a81ded632ef8ce71c5f379a6`

Red Hat Enterprise Linux AS (v. 4)

SRPMS:
vixie-cron-4.1-47.EL4.src.rpm File outdated by: RHBA-2008:0115	`c963050603bd83341aa5512719bcd6e1`

IA-32:
vixie-cron-4.1-47.EL4.i386.rpm File outdated by: RHBA-2008:0115	`e50b7208f6e67ef36a941a9d53dd4ecd`

IA-64:
vixie-cron-4.1-47.EL4.ia64.rpm File outdated by: RHBA-2008:0115	`2a8acdc3387f80b88b05d3caf37494b4`

PPC:
vixie-cron-4.1-47.EL4.ppc.rpm File outdated by: RHBA-2008:0115	`68741ea68b37363dc302345cc3bf2209`

s390:
vixie-cron-4.1-47.EL4.s390.rpm File outdated by: RHBA-2008:0115	`4bcc729825cd7622cc9cf2ce317f641f`

s390x:
vixie-cron-4.1-47.EL4.s390x.rpm File outdated by: RHBA-2008:0115	`903f1dbd19ee18070d02b659d8d8ba83`

x86_64:
vixie-cron-4.1-47.EL4.x86_64.rpm File outdated by: RHBA-2008:0115	`9cdec79f5fd5c4daaec883aa70bb6432`

Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
vixie-cron-4.1-70.el5.src.rpm File outdated by: RHBA-2007:0564	`91b16cc530bd52916de05ebf3a291ec3`

IA-32:
vixie-cron-4.1-70.el5.i386.rpm File outdated by: RHBA-2007:0564	`bf66188eda08c4e4410854a118448fce`

x86_64:
vixie-cron-4.1-70.el5.x86_64.rpm File outdated by: RHBA-2007:0564	`2d9c6bdffb703c8ecdfb5bbac74a193e`

Red Hat Enterprise Linux ES (v. 3)

SRPMS:
vixie-cron-4.1-19.EL3.src.rpm File outdated by: RHBA-2007:1001	`7c765917fa13d34ca705284d0a51d16e`

IA-32:
vixie-cron-4.1-19.EL3.i386.rpm File outdated by: RHBA-2007:1001	`ea525e4a8c8dc818b9e113c02a7e4c48`

IA-64:
vixie-cron-4.1-19.EL3.ia64.rpm File outdated by: RHBA-2007:1001	`dbd7433ff15f0aaf005cd1bbed789112`

x86_64:
vixie-cron-4.1-19.EL3.x86_64.rpm File outdated by: RHBA-2007:1001	`c2440f24a81ded632ef8ce71c5f379a6`

Red Hat Enterprise Linux ES (v. 4)

SRPMS:
vixie-cron-4.1-47.EL4.src.rpm File outdated by: RHBA-2008:0115	`c963050603bd83341aa5512719bcd6e1`

IA-32:
vixie-cron-4.1-47.EL4.i386.rpm File outdated by: RHBA-2008:0115	`e50b7208f6e67ef36a941a9d53dd4ecd`

IA-64:
vixie-cron-4.1-47.EL4.ia64.rpm File outdated by: RHBA-2008:0115	`2a8acdc3387f80b88b05d3caf37494b4`

x86_64:
vixie-cron-4.1-47.EL4.x86_64.rpm File outdated by: RHBA-2008:0115	`9cdec79f5fd5c4daaec883aa70bb6432`

Red Hat Enterprise Linux WS (v. 3)

SRPMS:
vixie-cron-4.1-19.EL3.src.rpm File outdated by: RHBA-2007:1001	`7c765917fa13d34ca705284d0a51d16e`

IA-32:
vixie-cron-4.1-19.EL3.i386.rpm File outdated by: RHBA-2007:1001	`ea525e4a8c8dc818b9e113c02a7e4c48`

IA-64:
vixie-cron-4.1-19.EL3.ia64.rpm File outdated by: RHBA-2007:1001	`dbd7433ff15f0aaf005cd1bbed789112`

x86_64:
vixie-cron-4.1-19.EL3.x86_64.rpm File outdated by: RHBA-2007:1001	`c2440f24a81ded632ef8ce71c5f379a6`

Red Hat Enterprise Linux WS (v. 4)

SRPMS:
vixie-cron-4.1-47.EL4.src.rpm File outdated by: RHBA-2008:0115	`c963050603bd83341aa5512719bcd6e1`

IA-32:
vixie-cron-4.1-47.EL4.i386.rpm File outdated by: RHBA-2008:0115	`e50b7208f6e67ef36a941a9d53dd4ecd`

IA-64:
vixie-cron-4.1-47.EL4.ia64.rpm File outdated by: RHBA-2008:0115	`2a8acdc3387f80b88b05d3caf37494b4`

x86_64:
vixie-cron-4.1-47.EL4.x86_64.rpm File outdated by: RHBA-2008:0115	`9cdec79f5fd5c4daaec883aa70bb6432`

(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

223662 - crond failed "Days of week" after a few hours on 1st/Jan
235880 - CVE-2007-1856 crontab denial of service

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1856
http://www.redhat.com/security/updates/classification/#moderate

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
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/