Vulnerabilidade Denial of Service

[vinisec]

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

CVE-2021-27923

Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICO container, and thus an attempted memory allocation can be very large.

References
https://nvd.nist.gov/vuln/detail/CVE-2021-27923
https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TQQY6472RX4J2SUJENWDZAWKTJJGP2ML/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTSY25UJU7NJUFHH3HWT575LT4TDFWBZ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S7G44Z33J4BNI2DPDROHWGVG2U7ZH5JU/

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