SUSE Linux update for samba



Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2015-5252
CVE-2016-2110
CVE-2016-2111
CWE-ID CWE-264
CWE-300
CWE-290
Exploitation vector Network
Public exploit N/A
Vulnerable software
 SUSE Linux
Operating systems & Components / Operating system

Vendor SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32347

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-5252

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

vfs.c in smbd in Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, when share names with certain substring relationships exist, allows remote attackers to bypass intended file-access restrictions via a symlink that points outside of a share.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 10

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00046.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Man-in-the-middle attack

EUVDB-ID: #VU235

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-2110

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to the failure to protect the feature negotiation of NTLMSSP from a downgrade. A remote unauthenticated attacker can bypass security restrictions by using man-in-the-middle techniques to clear NTLMSSP_NEGOTIATE_SIGN and NTLMSSP_NEGOTIATE_SEAL flags and perform downgrade attacks.

Successful exploitation of this vulnerability may result in security restrictions bypass.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 10

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00046.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Man-in-the-middle attack

EUVDB-ID: #VU236

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-2111

CWE-ID: CWE-290 - Authentication Bypass by Spoofing

Exploit availability: No

Description

The vulnerability allows a remote attacker to to conduct spoofing attacks.

The vulnerability exists due to an error in the NETLOGON service when a Domain Controller is configured. A remote unauthenticated attacker can conduct spoofing attacks by using a specially crafted application to connect to another domain joined system and access session-related information of the spoofed computer.

Successful exploitation of this vulnerability may result in disclosure of user information.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Linux: 10

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00046.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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