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CVE-2021-25292

Good to know:

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Date: March 18, 2021

An issue was discovered in Pillow before 8.1.1. The PDF parser allows a regular expression DoS (ReDoS) attack via a crafted PDF file because of a catastrophic backtracking regex.

Language: Python

Severity Score

Related Resources (11)

https://security.gentoo.org/glsa/202107-33
https://access.redhat.com/security/cve/CVE-2021-25292
https://github.com/python-pillow/Pillow/commit/3bce145966374dd39ce58a6fc0083f8d1890719c
https://github.com/python-pillow/Pillow/commit/6207b44ab1ff4a91d8ddc7579619876d0bb191a4
https://github.com/python-pillow/Pillow
https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-38.yaml
https://github.com/python-pillow/Pillow/commit/521dab94c7ab72b037bd9a83e9663401e0fd2cee
https://github.com/advisories/GHSA-9hx2-hgq2-2g4f
https://nvd.nist.gov/vuln/detail/CVE-2021-25292
https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html
https://www.mend.io/vulnerability-database/CVE-2021-25292

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Inefficient Regular Expression Complexity

CWE-1333

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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