Vulnerability CVE-2017-9146

Vulnerability Name:

CVE-2017-9146 (CCN-128431)

Assigned:

2017-05-15

Published:

2017-05-15

Updated:

2019-05-18

Summary:

The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.

CVSS v3 Severity:

8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)

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

3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

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

CVSS v2 Severity:

6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)

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

1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)

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

Vulnerability Type:

CWE-119

Vulnerability Consequences:

Denial of Service

References:

Source: MISC
Type: Third Party Advisory
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862707

Source: MITRE
Type: CNA
CVE-2017-9146

Source: XF
Type: UNKNOWN
ytnef-cve20179146-dos(128431)

Source: CCN
Type: ytnef GIT Repository
ytnef

Source: CCN
Type: ytnef GIT Repository
heap-buffer overrun: write extra bytes in TNEFFillMapi #47

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/Yeraze/ytnef/issues/47

Source: FEDORA
Type: UNKNOWN
FEDORA-2019-7d7083b8be

Source: UBUNTU
Type: UNKNOWN
USN-3667-1

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-9146

Vulnerable Configuration:

Configuration 1:

cpe:/a:ytnef_project:ytnef:*:*:*:*:*:*:*:* (Version <= 1.9.2)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:201791460000000	V	CVE-2017-9146 on Ubuntu 16.04 LTS (xenial) - low.	2017-05-22
oval:com.ubuntu.artful:def:20179146000	V	CVE-2017-9146 on Ubuntu 17.10 (artful) - medium.	2017-05-22
oval:com.ubuntu.xenial:def:20179146000	V	CVE-2017-9146 on Ubuntu 16.04 LTS (xenial) - low.	2017-05-22
oval:com.ubuntu.disco:def:201791460000000	V	CVE-2017-9146 on Ubuntu 19.04 (disco) - low.	2017-05-22
oval:com.ubuntu.bionic:def:20179146000	V	CVE-2017-9146 on Ubuntu 18.04 LTS (bionic) - low.	2017-05-22
oval:com.ubuntu.cosmic:def:201791460000000	V	CVE-2017-9146 on Ubuntu 18.10 (cosmic) - low.	2017-05-22
oval:com.ubuntu.cosmic:def:20179146000	V	CVE-2017-9146 on Ubuntu 18.10 (cosmic) - low.	2017-05-22
oval:com.ubuntu.bionic:def:201791460000000	V	CVE-2017-9146 on Ubuntu 18.04 LTS (bionic) - low.	2017-05-22
oval:com.ubuntu.trusty:def:20179146000	V	CVE-2017-9146 on Ubuntu 14.04 LTS (trusty) - low.	2017-05-22

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