Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2009-2948

Incorrect Permission Assignment for Critical Resource

Published: Oct 07, 2009 | Modified: Oct 31, 2022
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
1.9 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:N
RedHat/V2
1.2 LOW
AV:L/AC:H/Au:N/C:P/I:N/A:N
RedHat/V3
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2009-2948
CWEhttps://cwe.mitre.org/data/definitions/732.html

mount.cifs in Samba 3.0 before 3.0.37, 3.2 before 3.2.15, 3.3 before 3.3.8 and 3.4 before 3.4.2, when mount.cifs is installed suid root, does not properly enforce permissions, which allows local users to read part of the credentials file and obtain the password by specifying the path to the credentials file and using the –verbose or -v option.

Weakness

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

Affected Software

Name Vendor Start Version End Version
Samba Samba 3.0.0 (including) 3.0.37 (excluding)
Samba Samba 3.2.0 (including) 3.2.15 (excluding)
Samba Samba 3.3.0 (including) 3.3.8 (excluding)
Samba Samba 3.4.0 (including) 3.4.2 (excluding)
Red Hat Enterprise Linux 4 RedHat samba-0:3.0.33-0.18.el4_8 *
Red Hat Enterprise Linux 5 RedHat samba-0:3.0.33-3.15.el5_4 *
Supplementary for Red Hat Enterprise Linux 5 RedHat samba3x-0:3.3.8-0.46.el5 *
Samba Ubuntu dapper *
Samba Ubuntu devel *
Samba Ubuntu hardy *
Samba Ubuntu intrepid *
Samba Ubuntu jaunty *

Potential Mitigations

  • Run the code in a “jail” or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
  • OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.

References

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