libsixel up to 1.8.2 fromgif.c gif_process_raster stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in libsixel up to 1.8.2. Affected by this vulnerability is the function gif_process_raster of the file fromgif.c. The manipulation results in stack-based overflow. This vulnerability was named CVE-2020-21050. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in libsixel up to 1.8.2. It has been classified as critical. Affected is the function gif_process_raster of the file fromgif.c. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 09/15/2021 as 7808a06b88c11dbc502318cdd51fa374f8cd47ee. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2020-21050 since 08/13/2020. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 1.8.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 7808a06b88c11dbc502318cdd51fa374f8cd47ee 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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 1.8.3
Patch: 7808a06b88c11dbc502318cdd51fa374f8cd47ee

Timelineinfo

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

Sourcesinfo

Advisory: 7808a06b88c11dbc502318cdd51fa374f8cd47ee
Status: Confirmed

CVE: CVE-2020-21050 (🔍)
GCVE (CVE): GCVE-0-2020-21050
GCVE (VulDB): GCVE-100-182688

Entryinfo

Created: 09/15/2021 03:21
Updated: 09/17/2021 14:50
Changes: 09/15/2021 03:21 (43), 09/17/2021 14:50 (1)
Complete: 🔍
Cache ID: 216::103

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