- Issued:
- 2009-05-18
- Updated:
- 2009-05-18
RHSA-2009:1040 - Critical: ntp security update
Synopsis
Critical: ntp security update
Type/Severity
Security Advisory Critical
Topic
An updated ntp package that fixes two security issues is now available for Red Hat Enterprise Linux 4.
This update has been rated as having critical security impact by the Red Hat Security Response Team.
Description
The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source.
A buffer overflow flaw was discovered in the ntpd daemon's NTPv4 authentication code. If ntpd was configured to use public key cryptography for NTP packet authentication, a remote attacker could use this flaw to send a specially-crafted request packet that could crash ntpd or, potentially, execute arbitrary code with the privileges of the "ntp" user. (CVE-2009-1252)
Note: NTP authentication is not enabled by default.
A buffer overflow flaw was found in the ntpq diagnostic command. A malicious, remote server could send a specially-crafted reply to an ntpq request that could crash ntpq or, potentially, execute arbitrary code with the privileges of the user running the ntpq command. (CVE-2009-0159)
All ntp users are advised to upgrade to this updated package, which contains backported patches to resolve these issues. After installing the update, the ntpd daemon will be restarted automatically.
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 This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.8 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.8 | ia64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.8 | i386 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.7 | ia64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 4.7 | i386 |
| Red Hat Enterprise Linux for Power, big endian | 4 | ppc |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 4.8 | ppc |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 4.7 | ppc |
| 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 - Extended Update Support | 4.8 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 4.8 | s390 |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 4.7 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 4.7 | s390 |
| 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 Server | 4 | x86_64 |
| Red Hat Enterprise Linux Server | 4 | ia64 |
| Red Hat Enterprise Linux Server | 4 | i386 |
| Red Hat Enterprise Linux Desktop | 4 | x86_64 |
| Red Hat Enterprise Linux Desktop | 4 | i386 |
Updated Packages
- ntp-4.2.0.a.20040617-8.el4_7.2.ia64.rpm
- ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
- ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm
- ntp-4.2.0.a.20040617-8.el4_7.2.s390x.rpm
- ntp-4.2.0.a.20040617-8.el4_7.2.s390.rpm
- ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
- ntp-4.2.0.a.20040617-8.el4_7.2.ppc.rpm
Fixes
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.