VDB-121416 · CVE-2018-14046 · Nessus 111620

Exiv2 0.26 webpimage.cpp WebPImage::decodeChunks memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Exiv2 0.26. This impacts the function WebPImage::decodeChunks of the file webpimage.cpp. The manipulation results in memory corruption. This vulnerability is identified as CVE-2018-14046. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Exiv2 0.26 (Image Processing Software). It has been classified as critical. Affected is the function WebPImage::decodeChunks of the file webpimage.cpp. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Exiv2 0.26 has a heap-based buffer over-read in WebPImage::decodeChunks in webpimage.cpp.

The bug was discovered 07/08/2018. The weakness was released 07/13/2018 (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2018-14046 since 07/13/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111620 (Fedora 27 : exiv2 (2018-871fa4d189)), 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 277432 (Fedora Security Update for exiv2 (FEDORA-2018-8b67a5c7e2)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111620). Entries connected to this vulnerability are available at VDB-102835, VDB-110669, VDB-113170 and VDB-115290. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Image Processing Software

Name

Exiv2

Version

0.26

License

free

Website

Product: https://github.com/Exiv2/exiv2/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 111620
Nessus Name: Fedora 27 : exiv2 (2018-871fa4d189)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

07/08/2018 🔍
07/13/2018 +4 days 🔍
07/13/2018 +0 days 🔍
07/13/2018 +0 days 🔍
07/13/2018 +0 days 🔍
08/09/2018 +27 days 🔍
08/10/2018 +1 days 🔍
04/09/2023 +1703 days 🔍

Sourcesinfo

Product: github.com

Advisory: FEDORA-2018-871fa4d189
Status: Not defined

CVE: CVE-2018-14046 (🔍)
GCVE (CVE): GCVE-0-2018-14046
GCVE (VulDB): GCVE-100-121416
See also: 🔍

Entryinfo

Created: 07/14/2018 01:06
Updated: 04/09/2023 08:59
Changes: 07/14/2018 01:06 (72), 03/04/2020 15:57 (3), 04/09/2023 08:55 (4), 04/09/2023 08:59 (1)
Complete: 🔍
Cache ID: 216::103

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