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Mandriva Linux Security Advisory 2015-003

Mandriva Linux Security Advisory 2015-003
Posted Jan 5, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-003 - If no authentication key is defined in the ntp.conf file, a cryptographically-weak default key is generated. ntp-keygen before 4.2.7p230 uses a non-cryptographic random number generator with a weak seed to generate symmetric keys. A remote unauthenticated attacker may craft special packets that trigger buffer overflows in the ntpd functions crypto_recv() (when using autokey authentication), ctl_putdata(), and configure(). The resulting buffer overflows may be exploited to allow arbitrary malicious code to be executed with the privilege of the ntpd process. A section of code in ntpd handling a rare error is missing a return statement, therefore processing did not stop when the error was encountered. This situation may be exploitable by an attacker. The ntp package has been patched to fix these issues.

tags | advisory, remote, overflow, arbitrary
systems | linux, mandriva
advisories | CVE-2014-9293, CVE-2014-9294, CVE-2014-9295, CVE-2014-9296
SHA-256 | e84745145e8e44d6f35dc2a132bbaf18a67dbe74926eba9217d0cebc264f9899

Mandriva Linux Security Advisory 2015-003

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2015:003
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : ntp
Date : January 5, 2015
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Updated ntp packages fix security vulnerabilities:

If no authentication key is defined in the ntp.conf file, a
cryptographically-weak default key is generated (CVE-2014-9293).

ntp-keygen before 4.2.7p230 uses a non-cryptographic random number
generator with a weak seed to generate symmetric keys (CVE-2014-9294).

A remote unauthenticated attacker may craft special packets that
trigger buffer overflows in the ntpd functions crypto_recv() (when
using autokey authentication), ctl_putdata(), and configure(). The
resulting buffer overflows may be exploited to allow arbitrary
malicious code to be executed with the privilege of the ntpd process
(CVE-2014-9295).

A section of code in ntpd handling a rare error is missing a return
statement, therefore processing did not stop when the error was
encountered. This situation may be exploitable by an attacker
(CVE-2014-9296).

The ntp package has been patched to fix these issues.
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9293
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9294
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9295
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9296
http://advisories.mageia.org/MGASA-2014-0541.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
25fe56fc0649ac9bb83be467969c2380 mbs1/x86_64/ntp-4.2.6p5-8.1.mbs1.x86_64.rpm
9409f5337bc2a2682e09db81e769cd5c mbs1/x86_64/ntp-client-4.2.6p5-8.1.mbs1.x86_64.rpm
df65cc9c536cdd461e1ef95318ab0d3b mbs1/x86_64/ntp-doc-4.2.6p5-8.1.mbs1.x86_64.rpm
53f446bffdf6e87726a9772e946c5e34 mbs1/SRPMS/ntp-4.2.6p5-8.1.mbs1.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/en/support/security/advisories/

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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