Red Hat Gluster Storage 3 update for samba



Published: 2020-03-27
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-10218
CVE-2019-14907
CWE-ID CWE-22
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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samba (Red Hat package)
Operating systems & Components / Operating system package or component

libtevent (Red Hat package)
Operating systems & Components / Operating system package or component

libtdb (Red Hat package)
Operating systems & Components / Operating system package or component

libtalloc (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal

EUVDB-ID: #VU22329

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10218

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in filenames within Samba client code (libsmbclient). A malicious SMB server can return a filename to the client containing directory traversal characters and force the client to read or write data to local files.

Successful exploitation of the vulnerability may allow an attacker to overwrite arbitrary files on the client.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

samba (Red Hat package): 4.2.4-9.1.el7rhgs - 4.9.8-109.el7rhgs

libtevent (Red Hat package): 0.9.26-1.el7rhgs - 0.9.37-3.el7rhgs

libtdb (Red Hat package): 1.3.8-1.el7rhgs - 1.3.16-3.el7rhgs

libtalloc (Red Hat package): 2.1.5-1.el7rhgs - 2.1.14-3.el7rhgs

External links

http://access.redhat.com/errata/RHSA-2020:0943


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) Improper input validation

EUVDB-ID: #VU24466

Risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14907

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect processing of certain user-controlled string, if logging is enabled at level 3 or above. A remote attacker can send specially crafted data to the Samba DC and terminate Samba RPC server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

samba (Red Hat package): 4.2.4-9.1.el7rhgs - 4.9.8-109.el7rhgs

libtevent (Red Hat package): 0.9.26-1.el7rhgs - 0.9.37-3.el7rhgs

libtdb (Red Hat package): 1.3.8-1.el7rhgs - 1.3.16-3.el7rhgs

libtalloc (Red Hat package): 2.1.5-1.el7rhgs - 2.1.14-3.el7rhgs

External links

http://access.redhat.com/errata/RHSA-2020:0943


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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