CVE-2020-21547: Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.

PriorityP339high8.8CVSS 3.1

AVNACLPRNUIRSUCHIHAH

EPSS

1.06%

60.9th percentile

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

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	libsixel	< libsixel 1.8.6-1 (bookworm)	libsixel 1.8.6-1 (bookworm)
libsixel_project	libsixel	>= 0 < 1.8.6-1	1.8.6-1
libsixel_project	libsixel	>= 0 < 1.8.6-1	1.8.6-1
libsixel_project	libsixel	>= 0 < 1.8.6-1	1.8.6-1
libsixel_project	libsixel	>= 0 < 1.8.6-1	1.8.6-1
saitoha	libsixel	—	—

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

osv8.8HIGH

vendor_debian8.8HIGH

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