Vulnerabilidade Potential infinite loop

[vinisec]

Descreva a vulnerabilidade de segurança (se houver CVE, coloque como
referência)

CVE-2021-28676

An issue was discovered in Pillow before 8.2.0. For FLI data, FliDecode did not properly check that the block advance was non-zero, potentially leading to an infinite loop on load.

References
https://nvd.nist.gov/vuln/detail/CVE-2021-28676
python-pillow/Pillow#5377
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos
https://lists.fedoraproject.org/archives/list/[email protected]/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
https://security.gentoo.org/glsa/202107-33
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html

Classifique a prioridade de correção, de acordo com a severidade da
vulnerabilidade 30 dias