Exiv2 0.26 TIFF File value.cpp Exiv2::DataValue::toLong null pointer dereference

HistoryDiffrelatejsonxmlCTI

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.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Exiv2 0.26. This affects the function Exiv2::DataValue::toLong of the file value.cpp of the component TIFF File Handler. Such manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2017-18005. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Exiv2 0.26 (Image Processing Software). It has been rated as problematic. Affected by this issue is the function Exiv2::DataValue::toLong of the file value.cpp of the component TIFF File Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

Exiv2 0.26 has a Null Pointer Dereference in the Exiv2::DataValue::toLong function in value.cpp, related to crafted metadata in a TIFF file.

The bug was discovered 11/19/2017. The weakness was disclosed 12/31/2017 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2017-18005 since 12/31/2017. The attack may be launched remotely. No form of authentication is required for exploitation. 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 42 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

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: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/19/2017 🔍
12/31/2017 +42 days 🔍
12/31/2017 +0 days 🔍
12/31/2017 +0 days 🔍
01/01/2018 +1 days 🔍
01/19/2023 +1844 days 🔍

Sourcesinfo

Product: github.com

Advisory: 168
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-18005 (🔍)
GCVE (CVE): GCVE-0-2017-18005
GCVE (VulDB): GCVE-100-111212

Entryinfo

Created: 01/01/2018 10:28
Updated: 01/19/2023 15:01
Changes: 01/01/2018 10:28 (53), 12/18/2019 20:15 (7), 01/19/2023 14:59 (3), 01/19/2023 15:01 (1)
Complete: 🔍
Cache ID: 216::103