Debian Security Advisory

DSA-1702-1 ntp -- interpretation conflict

Date Reported:
12 Jan 2009
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 511227.
In Mitre's CVE dictionary: CVE-2009-0021.
More information:

It has been discovered that NTP, an implementation of the Network Time Protocol, does not properly check the result of an OpenSSL function for verifying cryptographic signatures, which may ultimately lead to the acceptance of unauthenticated time information. (Note that cryptographic authentication of time servers is often not enabled in the first place.)

For the stable distribution (etch), this problem has been fixed in version 4.2.2.p4+dfsg-2etch1.

For the unstable distribution (sid), this problem has been fixed in version 4.2.4p4+dfsg-8.

The testing distribution (lenny) will be fixed soon.

We recommend that you upgrade your ntp package.

Fixed in:

Debian GNU/Linux 4.0 (etch)

Architecture-independent component:
HP Precision:
Intel IA-32:
Intel IA-64:
Little-endian MIPS:
IBM S/390:
Sun Sparc:

MD5 checksums of the listed files are available in the original advisory.