Issued:
2007-05-17
Updated:
2007-05-17

RHSA-2007:0345 - Security Advisory

Synopsis

Moderate: vixie-cron security update

Type/Severity

Security Advisory: Moderate

Topic

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.

Description

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

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 Server 4 x86_64
  • Red Hat Enterprise Linux Server 4 ia64
  • Red Hat Enterprise Linux Server 4 i386
  • Red Hat Enterprise Linux Server 3 x86_64
  • Red Hat Enterprise Linux Server 3 ia64
  • Red Hat Enterprise Linux Server 3 i386
  • Red Hat Enterprise Linux Server - Extended Update Support 4.5 x86_64
  • Red Hat Enterprise Linux Server - Extended Update Support 4.5 ia64
  • Red Hat Enterprise Linux Server - Extended Update Support 4.5 i386
  • Red Hat Enterprise Linux Workstation 5 x86_64
  • Red Hat Enterprise Linux Workstation 5 i386
  • Red Hat Enterprise Linux Workstation 4 x86_64
  • Red Hat Enterprise Linux Workstation 4 ia64
  • Red Hat Enterprise Linux Workstation 4 i386
  • Red Hat Enterprise Linux Workstation 3 x86_64
  • Red Hat Enterprise Linux Workstation 3 ia64
  • Red Hat Enterprise Linux Workstation 3 i386
  • Red Hat Enterprise Linux Desktop 5 x86_64
  • Red Hat Enterprise Linux Desktop 5 i386
  • Red Hat Enterprise Linux Desktop 4 x86_64
  • Red Hat Enterprise Linux Desktop 4 i386
  • Red Hat Enterprise Linux Desktop 3 x86_64
  • Red Hat Enterprise Linux Desktop 3 i386
  • Red Hat Enterprise Linux for IBM z Systems 5 s390x
  • Red Hat Enterprise Linux for IBM z Systems 4 s390x
  • Red Hat Enterprise Linux for IBM z Systems 4 s390
  • Red Hat Enterprise Linux for IBM z Systems 3 s390x
  • Red Hat Enterprise Linux for IBM z Systems 3 s390
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.5 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.5 s390
  • Red Hat Enterprise Linux for Power, big endian 5 ppc
  • Red Hat Enterprise Linux for Power, big endian 4 ppc
  • Red Hat Enterprise Linux for Power, big endian 3 ppc
  • Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.5 ppc
  • Red Hat Enterprise Linux Server from RHUI 5 x86_64
  • Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

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

CVEs

References

Red Hat Enterprise Linux Server 5

SRPM
vixie-cron-4.1-70.el5.src.rpm SHA-256: 146696ff47ddd7467de4f3a5f9dcb8420879a3aa68a96b9e3994c14e81f0501c
x86_64
vixie-cron-4.1-70.el5.x86_64.rpm SHA-256: 45abd443bdd1be8c7736090b3156273accae429dc11a1cf952e054a0291aacbc
ia64
vixie-cron-4.1-70.el5.ia64.rpm SHA-256: d93fa45028d655aef70d1723fa64d672d5889e6defc11868c76fd5272142ad24
i386
vixie-cron-4.1-70.el5.i386.rpm SHA-256: ed774e63ce2c63785907781cf603fcee43f38f04032865a0b579f41c29916a59

Red Hat Enterprise Linux Server 4

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
x86_64
vixie-cron-4.1-47.EL4.x86_64.rpm SHA-256: 60ddac756ea712118713341e80e8a48fdeadeb63c9411d7480820d582db27c81
vixie-cron-4.1-47.EL4.x86_64.rpm SHA-256: 60ddac756ea712118713341e80e8a48fdeadeb63c9411d7480820d582db27c81
ia64
vixie-cron-4.1-47.EL4.ia64.rpm SHA-256: f002c39a95e01483f7563f54ce0cc54eeca071b40ed834f87dd5a94f86bfb587
vixie-cron-4.1-47.EL4.ia64.rpm SHA-256: f002c39a95e01483f7563f54ce0cc54eeca071b40ed834f87dd5a94f86bfb587
i386
vixie-cron-4.1-47.EL4.i386.rpm SHA-256: 9c380c847e33ae0a8aaf0552c66f77bc167fa36a0e8e2569eb9df776b3fb8b3f
vixie-cron-4.1-47.EL4.i386.rpm SHA-256: 9c380c847e33ae0a8aaf0552c66f77bc167fa36a0e8e2569eb9df776b3fb8b3f

Red Hat Enterprise Linux Server - Extended Update Support 4.5

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
x86_64
vixie-cron-4.1-47.EL4.x86_64.rpm SHA-256: 60ddac756ea712118713341e80e8a48fdeadeb63c9411d7480820d582db27c81
vixie-cron-4.1-47.EL4.x86_64.rpm SHA-256: 60ddac756ea712118713341e80e8a48fdeadeb63c9411d7480820d582db27c81
ia64
vixie-cron-4.1-47.EL4.ia64.rpm SHA-256: f002c39a95e01483f7563f54ce0cc54eeca071b40ed834f87dd5a94f86bfb587
vixie-cron-4.1-47.EL4.ia64.rpm SHA-256: f002c39a95e01483f7563f54ce0cc54eeca071b40ed834f87dd5a94f86bfb587
i386
vixie-cron-4.1-47.EL4.i386.rpm SHA-256: 9c380c847e33ae0a8aaf0552c66f77bc167fa36a0e8e2569eb9df776b3fb8b3f
vixie-cron-4.1-47.EL4.i386.rpm SHA-256: 9c380c847e33ae0a8aaf0552c66f77bc167fa36a0e8e2569eb9df776b3fb8b3f

Red Hat Enterprise Linux Workstation 5

SRPM
vixie-cron-4.1-70.el5.src.rpm SHA-256: 146696ff47ddd7467de4f3a5f9dcb8420879a3aa68a96b9e3994c14e81f0501c
x86_64
vixie-cron-4.1-70.el5.x86_64.rpm SHA-256: 45abd443bdd1be8c7736090b3156273accae429dc11a1cf952e054a0291aacbc
i386
vixie-cron-4.1-70.el5.i386.rpm SHA-256: ed774e63ce2c63785907781cf603fcee43f38f04032865a0b579f41c29916a59

Red Hat Enterprise Linux Workstation 4

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
x86_64
vixie-cron-4.1-47.EL4.x86_64.rpm SHA-256: 60ddac756ea712118713341e80e8a48fdeadeb63c9411d7480820d582db27c81
ia64
vixie-cron-4.1-47.EL4.ia64.rpm SHA-256: f002c39a95e01483f7563f54ce0cc54eeca071b40ed834f87dd5a94f86bfb587
i386
vixie-cron-4.1-47.EL4.i386.rpm SHA-256: 9c380c847e33ae0a8aaf0552c66f77bc167fa36a0e8e2569eb9df776b3fb8b3f

Red Hat Enterprise Linux Desktop 5

SRPM
vixie-cron-4.1-70.el5.src.rpm SHA-256: 146696ff47ddd7467de4f3a5f9dcb8420879a3aa68a96b9e3994c14e81f0501c
x86_64
vixie-cron-4.1-70.el5.x86_64.rpm SHA-256: 45abd443bdd1be8c7736090b3156273accae429dc11a1cf952e054a0291aacbc
i386
vixie-cron-4.1-70.el5.i386.rpm SHA-256: ed774e63ce2c63785907781cf603fcee43f38f04032865a0b579f41c29916a59

Red Hat Enterprise Linux Desktop 4

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
x86_64
vixie-cron-4.1-47.EL4.x86_64.rpm SHA-256: 60ddac756ea712118713341e80e8a48fdeadeb63c9411d7480820d582db27c81
i386
vixie-cron-4.1-47.EL4.i386.rpm SHA-256: 9c380c847e33ae0a8aaf0552c66f77bc167fa36a0e8e2569eb9df776b3fb8b3f

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
vixie-cron-4.1-70.el5.src.rpm SHA-256: 146696ff47ddd7467de4f3a5f9dcb8420879a3aa68a96b9e3994c14e81f0501c
s390x
vixie-cron-4.1-70.el5.s390x.rpm SHA-256: 619745d50b1ddfa1fb88d49d96b3a96238c2e97a8f2ba611bef66f50584db7ef

Red Hat Enterprise Linux for IBM z Systems 4

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
s390x
vixie-cron-4.1-47.EL4.s390x.rpm SHA-256: 091ef2b649496f91c4a416fb20a80c692737c27a668d5ad56d7d0ec3bbd8c073
s390
vixie-cron-4.1-47.EL4.s390.rpm SHA-256: 91fb0c39b527646ba76a62035b4d5063129bb8e437a8676bfefb6d1ca059d913

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.5

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
s390x
vixie-cron-4.1-47.EL4.s390x.rpm SHA-256: 091ef2b649496f91c4a416fb20a80c692737c27a668d5ad56d7d0ec3bbd8c073
s390
vixie-cron-4.1-47.EL4.s390.rpm SHA-256: 91fb0c39b527646ba76a62035b4d5063129bb8e437a8676bfefb6d1ca059d913

Red Hat Enterprise Linux for Power, big endian 5

SRPM
vixie-cron-4.1-70.el5.src.rpm SHA-256: 146696ff47ddd7467de4f3a5f9dcb8420879a3aa68a96b9e3994c14e81f0501c
ppc
vixie-cron-4.1-70.el5.ppc.rpm SHA-256: be214ae7fa58b1f232913cb3de8f7c0702a8f78b0d94759817171e7158823f84

Red Hat Enterprise Linux for Power, big endian 4

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
ppc
vixie-cron-4.1-47.EL4.ppc.rpm SHA-256: ad5ebde18e6ea18c9f96ac99b2eabd3ee4e546d5eac199750188e075823dfe84

Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.5

SRPM
vixie-cron-4.1-47.EL4.src.rpm SHA-256: 4949982e271a66741e61642a01613444b68d182af22b64a2485d8ab65bb3775f
ppc
vixie-cron-4.1-47.EL4.ppc.rpm SHA-256: ad5ebde18e6ea18c9f96ac99b2eabd3ee4e546d5eac199750188e075823dfe84

Red Hat Enterprise Linux Server from RHUI 5

SRPM
vixie-cron-4.1-70.el5.src.rpm SHA-256: 146696ff47ddd7467de4f3a5f9dcb8420879a3aa68a96b9e3994c14e81f0501c
x86_64
vixie-cron-4.1-70.el5.x86_64.rpm SHA-256: 45abd443bdd1be8c7736090b3156273accae429dc11a1cf952e054a0291aacbc
i386
vixie-cron-4.1-70.el5.i386.rpm SHA-256: ed774e63ce2c63785907781cf603fcee43f38f04032865a0b579f41c29916a59

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