VDB-182687 · CVE-2020-21049 · GCVE-0-2020-21049

libsixel up to 1.8.4 PSD File stb_image.h denial of service

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.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in libsixel up to 1.8.4. Affected is an unknown function in the library stb_image.h of the component PSD File Handler. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2020-21049. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in libsixel up to 1.8.4 and classified as problematic. This issue affects an unknown functionality in the library stb_image.h of the component PSD File Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was disclosed 09/15/2021 as 0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2020-21049 since 08/13/2020. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 1.8.5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

libsixel

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libsixel 1.8.5
Patch: 0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d

Timelineinfo

08/13/2020 🔍
09/15/2021 +398 days 🔍
09/15/2021 +0 days 🔍
09/17/2021 +2 days 🔍

Sourcesinfo

Advisory: 0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d
Status: Confirmed

CVE: CVE-2020-21049 (🔍)
GCVE (CVE): GCVE-0-2020-21049
GCVE (VulDB): GCVE-100-182687

Entryinfo

Created: 09/15/2021 03:20
Updated: 09/17/2021 14:46
Changes: 09/15/2021 03:20 (43), 09/17/2021 14:46 (1)
Complete: 🔍
Cache ID: 216::103