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Debian DLA-1513-1 : openafs security update
critical Nessus Plugin ID 117640
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Synopsis
The remote Debian host is missing a security update.Description
Several security vulnerabilities were discovered in OpenAFS, a distributed file system.CVE-2018-16947
The backup tape controller process accepts incoming RPCs but does not require (or allow for) authentication of those RPCs. Handling those RPCs results in operations being performed with administrator credentials, including dumping/restoring volume contents and manipulating the backup database.
CVE-2018-16948
Several RPC server routines did not fully initialize their output variables before returning, leaking memory contents from both the stack and the heap. Because the OpenAFS cache manager functions as an Rx server for the AFSCB service, clients are also susceptible to information leakage.
CVE-2018-16949
Several data types used as RPC input variables were implemented as unbounded array types, limited only by the inherent 32-bit length field to 4GB. An unauthenticated attacker could send, or claim to send, large input values and consume server resources waiting for those inputs, denying service to other valid connections.
For Debian 8 'Jessie', these problems have been fixed in version 1.6.9-2+deb8u8.
We recommend that you upgrade your openafs packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected packages.See Also
https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html
Plugin Details
Severity: Critical
ID: 117640
File Name: debian_DLA-1513.nasl
Version: 1.5
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 9/24/2018
Updated: 8/6/2024
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2018-16947
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:openafs-modules-source, p-cpe:/a:debian:debian_linux:libafsauthent1, p-cpe:/a:debian:debian_linux:openafs-fileserver, p-cpe:/a:debian:debian_linux:openafs-dbg, p-cpe:/a:debian:debian_linux:openafs-modules-dkms, p-cpe:/a:debian:debian_linux:libkopenafs1, p-cpe:/a:debian:debian_linux:libafsrpc1, p-cpe:/a:debian:debian_linux:openafs-doc, p-cpe:/a:debian:debian_linux:libpam-openafs-kaserver, p-cpe:/a:debian:debian_linux:openafs-kpasswd, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:openafs-dbserver, p-cpe:/a:debian:debian_linux:libopenafs-dev, p-cpe:/a:debian:debian_linux:openafs-krb5, p-cpe:/a:debian:debian_linux:openafs-client, p-cpe:/a:debian:debian_linux:openafs-fuse
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 9/21/2018