| Description: | Summary:
The remote host is missing an update for the Debian 'postfix' package(s) announced via the DSA-1629-2 advisory.
Vulnerability Insight:
Sebastian Krahmer discovered that Postfix, a mail transfer agent, incorrectly checks the ownership of a mailbox. In some configurations, this allows for appending data to arbitrary files as root.
Note that only specific configurations are vulnerable, the default Debian installation is not affected. Only a configuration meeting the following requirements is vulnerable:
The mail delivery style is mailbox, with the Postfix built-in local(8) or virtual(8) delivery agents.
The mail spool directory (/var/spool/mail) is user-writeable.
The user can create hardlinks pointing to root-owned symlinks located in other directories.
For a detailed treating of the issue, please refer to the upstream author's announcement.
For the stable distribution (etch), this problem has been fixed in version 2.3.8-2+etch1.
For the testing distribution (lenny), this problem has been fixed in version 2.5.2-2lenny1.
For the unstable distribution (sid), this problem has been fixed in version 2.5.4-1.
We recommend that you upgrade your postfix package.
Affected Software/OS:
'postfix' package(s) on Debian 4.
Solution:
Please install the updated package(s).
CVSS Score:
6.2
CVSS Vector:
AV:L/AC:H/Au:N/C:C/I:C/A:C
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