Exempi up to 2.4.2 webp File WEBP_Support.cpp VPXChunk width/height input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Exempi up to 2.4.2. This issue affects the function VPXChunk of the file XMPFiles/source/FormatSupport/WEBP_Support.cpp of the component webp File Handler. Performing a manipulation of the argument width/height results in input validation. This vulnerability is reported as CVE-2017-18235. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Exempi up to 2.4.2. It has been classified as problematic. This affects the function VPXChunk of the file XMPFiles/source/FormatSupport/WEBP_Support.cpp of the component webp File Handler. The manipulation of the argument width/height with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

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.

The bug was discovered 07/25/2017. The weakness was disclosed 03/15/2018 (Website). The advisory is shared at bugs.freedesktop.org. This vulnerability is uniquely identified as CVE-2017-18235 since 03/15/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 233 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 108839 (Fedora 27 : exempi (2018-c442aad4dc)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277698 (Fedora Security Update for exempi (FEDORA-2018-c442aad4dc)).

Upgrading to version 2.4.3 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (108839). The entries VDB-114149, VDB-114150, VDB-114151 and VDB-114152 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108839
Nessus Name: Fedora 27 : exempi (2018-c442aad4dc)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861012
OpenVAS Name: Fedora Update for exempi FEDORA-2018-c442aad4dc
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Exempi 2.4.3
Patch: cgit.freedesktop.org

Timelineinfo

07/25/2017 🔍
03/15/2018 +233 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/16/2018 +1 days 🔍
04/04/2018 +19 days 🔍
04/05/2018 +1 days 🔍
02/22/2023 +1784 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-c442aad4dc
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-18235 (🔍)
GCVE (CVE): GCVE-0-2017-18235
GCVE (VulDB): GCVE-100-114657
See also: 🔍

Entryinfo

Created: 03/16/2018 08:07
Updated: 02/22/2023 08:29
Changes: 03/16/2018 08:07 (76), 01/14/2020 09:02 (3), 02/22/2023 08:24 (4), 02/22/2023 08:29 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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