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CVE-2021-25289

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Date: March 18, 2021

An issue was discovered in Pillow before 8.1.1. TiffDecode has a heap-based buffer overflow when decoding crafted YCbCr files because of certain interpretation conflicts with LibTIFF in RGBA mode. NOTE: this issue exists because of an incomplete fix for CVE-2020-35654.

Language: Python

Severity Score

Related Resources (9)

https://github.com/python-pillow/Pillow/commit/cbfdde7b1f2295059a20a539ee9960f0bec7b299
https://security.gentoo.org/glsa/202107-33
https://github.com/advisories/GHSA-57h3-9rgr-c24m
https://github.com/python-pillow/Pillow
https://nvd.nist.gov/vuln/detail/CVE-2021-25289
https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-35.yaml
https://github.com/python-pillow/Pillow/commit/3fee28eb9479bf7d59e0fa08068f9cc4a6e2f04c
https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html
https://www.mend.io/vulnerability-database/CVE-2021-25289

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

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): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

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

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