Vulnerability CVE-2017-17432

Vulnerability Name:

CVE-2017-17432 (CCN-135998)

Assigned:

2017-12-05

Published:

2017-12-05

Updated:

2019-10-03

Summary:

OpenAFS 1.x before 1.6.22 does not properly validate Rx ack packets, which allows remote attackers to cause a denial of service (system crash or application crash) via crafted fields, as demonstrated by an integer underflow and assertion failure for a small MTU value.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-617

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2017-17432

Source: CONFIRM
Type: Issue Tracking, Mailing List, Third Party Advisory
https://bugs.debian.org/883602

Source: XF
Type: UNKNOWN
openafs-cve201717432-dos(135998)

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20171220 [SECURITY] [DLA 1213-1] openafs security update

Source: DEBIAN
Type: Third Party Advisory
DSA-4067

Source: CCN
Type: OpenAFS Web site
Welcome to the home of OpenAFS

Source: CCN
Type: OpenAFS Security Advisory 2017-001
Rx denial of service (assertion failure)

Source: CONFIRM
Type: Vendor Advisory
https://www.openafs.org/pages/security/OPENAFS-SA-2017-001.txt

Vulnerable Configuration:

Configuration 1:

cpe:/a:openafs:openafs:*:*:*:*:*:*:*:* (Version >= 1.0 and < 1.6.22)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:openafs:openafs:1.6.21:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:2017174320000000	V	CVE-2017-17432 on Ubuntu 16.04 LTS (xenial) - medium.	2017-12-06
oval:com.ubuntu.disco:def:2017174320000000	V	CVE-2017-17432 on Ubuntu 19.04 (disco) - medium.	2017-12-06
oval:com.ubuntu.bionic:def:2017174320000000	V	CVE-2017-17432 on Ubuntu 18.04 LTS (bionic) - medium.	2017-12-06
oval:com.ubuntu.artful:def:201717432000	V	CVE-2017-17432 on Ubuntu 17.10 (artful) - medium.	2017-12-05
oval:com.ubuntu.xenial:def:201717432000	V	CVE-2017-17432 on Ubuntu 16.04 LTS (xenial) - medium.	2017-12-05
oval:com.ubuntu.bionic:def:201717432000	V	CVE-2017-17432 on Ubuntu 18.04 LTS (bionic) - medium.	2017-12-05
oval:com.ubuntu.cosmic:def:2017174320000000	V	CVE-2017-17432 on Ubuntu 18.10 (cosmic) - medium.	2017-12-05
oval:com.ubuntu.cosmic:def:201717432000	V	CVE-2017-17432 on Ubuntu 18.10 (cosmic) - medium.	2017-12-05
oval:com.ubuntu.trusty:def:201717432000	V	CVE-2017-17432 on Ubuntu 14.04 LTS (trusty) - medium.	2017-12-05

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