Debian Security Advisory

DSA-1823-1 samba -- several vulnerabilities

Date Reported:
25 Jun 2009
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2009-1886, CVE-2009-1888.
More information:

Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server. The Common Vulnerabilities and Exposures project identifies the following problems:

  • CVE-2009-1886

    The smbclient utility contains a formatstring vulnerability where commands dealing with file names treat user input as format strings to asprintf.

  • CVE-2009-1888

    In the smbd daemon, if a user is trying to modify an access control list (ACL) and is denied permission, this deny may be overridden if the parameter "dos filemode" is set to "yes" in the smb.conf and the user already has write access to the file.

The old stable distribution (etch) is not affected by these problems.

For the stable distribution (lenny), these problems have been fixed in version 3.2.5-4lenny6.

The unstable distribution (sid), which is only affected by CVE-2009-1888, will be fixed soon.

We recommend that you upgrade your samba package.

Fixed in:

Debian GNU/Linux 5.0 (lenny)

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

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