smbd in Samba 3.3.11, 3.4.6, and 3.5.0, when libcap support is enabled, runs with the CAP_DAC_OVERRIDE capability, which allows remote authenticated users to bypass intended file permissions via standard filesystem operations with any client.

The remote host is affected by the vulnerability described in GLSA-201206-22 (Samba: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Samba. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could possibly execute arbitrary code with root       privileges, cause a Denial of Service condition, take ownership of shared       files, or bypass file permissions. Furthermore, a local attacker may be       able to cause a Denial of Service condition or obtain sensitive       information in a Samba credentials file.
  Workaround :

    There is no known workaround at this time.

The remote Samba server has a flaw that causes all smbd processes, when libcap support is enabled, to inherit 'CAP_DAC_OVERRIDE' capabilities, which in turn causes all file system access to be allowed even when permissions should have been denied.

A remote, authenticated attacker can exploit this flaw to gain access to sensitive information on Samba shares that are accessible to their user id.

The remote Samba server is potentially affected by a security bypass vulnerability because of a flaw that causes all smbd processes, when libcap support is enabled, to inherit 'CAP_DAC_OVERRIDE' capabilities, which in turn causes all file system access to be allowed even when permissions should have been denied.

A remote, authenticated attacker may be able to exploit this flaw to gain access to sensitive information on Samba shares that are accessible to their user id.

According to its banner, the version of Samba Server on the remote host is potentially affected by a security bypass vulnerability.  A flaw exists that causes all smbd processes to inherit CAP_DAC_OVERRIDE capabilities, allowing all file system access to be allowed even when permissions should have denied access.

ID	Name	Product	Family	Severity
59675	GLSA-201206-22 : Samba: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
45047	Samba 'CAP_DAC_OVERRIDE' File Permission Security Bypass	Nessus	Misc.	high
45046	Samba 'CAP_DAC_OVERRIDE' File Permission Security Bypass (version check)	Nessus	Misc.	high
5360	Samba 3.3.11 / 3.4.6 / 3.5.0 Security Bypass Vulnerability	Nessus Network Monitor	Samba	high

Detections

Analytics

CVE-2010-0728

medium

Tenable Plugins

critical

high

high

high