python pillow CVE-2021-23437 vulnerability in Python and Other Products
Published on September 3, 2021

Regular Expression Denial of Service (ReDoS)

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The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.

Vendor Advisory Vendor Advisory Vendor Advisory NVD

Vulnerability Analysis

CVE-2021-23437 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Products Associated with CVE-2021-23437

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-23437 are published in these products:

Python Pillow
 
Fedora Project Fedora
 
Canonical Ubuntu Linux
 

Exploit Probability

EPSS
0.21%
Percentile
43.07%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.