CVE-2020-21547 : Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func

Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.

Published 2021-09-17 21:15:07

Updated 2021-09-29 14:05:48

Source MITRE

View at NVD, CVE.org

Vulnerability category: OverflowMemory Corruption

Products affected by CVE-2020-21547

Libsixel Project » Libsixel » Version: 1.8.2
cpe:2.3:a:libsixel_project:libsixel:1.8.2:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.38%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 57 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	2.8	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

https://github.com/saitoha/libsixel/issues/114

heap-buffer-overflow in dither_func_fs at tosixel.c:861 · Issue #114 · saitoha/libsixel · GitHub
Exploit;Issue Tracking;Patch;Third Party Advisory

Jump to