libsixel up to 1.9 libsixel/src/quant.c buffer overflow

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

Summaryinfo

A vulnerability was found in libsixel up to 1.9. It has been classified as critical. The affected element is an unknown function of the file libsixel/src/quant.c. Performing a manipulation results in buffer overflow. This vulnerability is cataloged as CVE-2021-40656. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in libsixel up to 1.9. It has been classified as critical. This affects an unknown code block of the file libsixel/src/quant.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 04/08/2022 as 25. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2021-40656 since 09/07/2021. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.10 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libsixel 1.10

Timelineinfo

09/07/2021 🔍
04/08/2022 +213 days 🔍
04/08/2022 +0 days 🔍
04/13/2022 +5 days 🔍

Sourcesinfo

Product: github.com

Advisory: 25
Status: Confirmed

CVE: CVE-2021-40656 (🔍)
GCVE (CVE): GCVE-0-2021-40656
GCVE (VulDB): GCVE-100-196719

Entryinfo

Created: 04/08/2022 20:39
Updated: 04/13/2022 08:00
Changes: 04/08/2022 20:39 (39), 04/13/2022 08:00 (1)
Complete: 🔍
Cache ID: 216::103

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