Mandriva Linux Security Advisory : nfs-utils (MDVSA-2013:178)

low Nessus Plugin ID 66978

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Synopsis

The remote Mandriva Linux host is missing one or more security updates.

Description

Updated nfs-utils packages fix security vulnerability

It was reported that rpc.gssd in nfs-utils is vulnerable to DNS spoofing due to it depending on PTR resolution for GSSAPI authentication. Because of this, if a user where able to poison DNS to a victim's computer, they would be able to trick rpc.gssd into talking to another server (perhaps with less security) than the intended server (with stricter security). If the victim has write access to the second (less secure) server, and the attacker has read access (when they normally might not on the secure server), the victim could write files to that server, which the attacker could obtain (when normally they would not be able to). To the victim this is transparent because the victim's computer asks the KDC for a ticket to the second server due to reverse DNS resolution; in this case Krb5 authentication does not fail because the victim is talking to the correct server (CVE-2013-1923).

Solution

Update the affected nfs-utils and / or nfs-utils-clients packages.

Plugin Details

Severity: Low

ID: 66978

File Name: mandriva_MDVSA-2013-178.nasl

Version: 1.11

Type: local

Family: Mandriva Local Security Checks

Published: 6/26/2013

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 3.2

Temporal Score: 2.4

Vector: CVSS2#AV:A/AC:H/Au:N/C:P/I:P/A:N

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:nfs-utils, cpe:/o:mandriva:business_server:1, p-cpe:/a:mandriva:linux:nfs-utils-clients

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/25/2013

Reference Information

CVE: CVE-2013-1923

BID: 58854

MDVSA: 2013:178

Detections

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