Vulnerability CVE-2017-18235

Vulnerability Name:

CVE-2017-18235 (CCN-140449)

Assigned:

2017-07-25

Published:

2017-07-25

Updated:

2018-04-04

Summary:

An issue was discovered in Exempi before 2.4.3. The VPXChunk class in XMPFiles/source/FormatSupport/WEBP_Support.cpp does not ensure nonzero widths and heights, which allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted .webp file.

CVSS v3 Severity:

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

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): 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:O/RC:C)

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:

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

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None 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-20

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2017-18235

Source: CCN
Type: Bugzilla Bug 101913
Reachable assertion: WEBP::PutLE24(XMP_Uns8*, XMP_Uns32): Assertion `val < (1 << 24)' failed.

Source: CONFIRM
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=101913

Source: CCN
Type: exempi CGIT Repository
Bug 101913 - Prevent an assert from being reached with a corrupt file

Source: CONFIRM
Type: Patch
https://cgit.freedesktop.org/exempi/commit/?id=9e76a7782a54a242f18d609e7ba32bf1c430a5e4

Source: XF
Type: UNKNOWN
exempi-cve201718235-dos(140449)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-18235

Vulnerable Configuration:

Configuration 1:

cpe:/a:exempi_project:exempi:*:*:*:*:*:*:*:* (Version < 2.4.3)

Configuration CCN 1:

cpe:/a:exempi_project:exempi:2.4.2:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.artful:def:201718235000	V	CVE-2017-18235 on Ubuntu 17.10 (artful) - medium.	2018-03-15
oval:com.ubuntu.bionic:def:2017182350000000	V	CVE-2017-18235 on Ubuntu 18.04 LTS (bionic) - medium.	2018-03-15
oval:com.ubuntu.bionic:def:201718235000	V	CVE-2017-18235 on Ubuntu 18.04 LTS (bionic) - medium.	2018-03-15
oval:com.ubuntu.xenial:def:2017182350000000	V	CVE-2017-18235 on Ubuntu 16.04 LTS (xenial) - medium.	2018-03-15
oval:com.ubuntu.trusty:def:201718235000	V	CVE-2017-18235 on Ubuntu 14.04 LTS (trusty) - medium.	2018-03-15
oval:com.ubuntu.xenial:def:201718235000	V	CVE-2017-18235 on Ubuntu 16.04 LTS (xenial) - medium.	2018-03-15

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