CVE-2009-4134

Python vulnerability

CVSS

5.0

EPSS

4.4%

EPSS pct

90th

Exploited

No known

Buffer underflow in the rgbimg module in Python 2.5 allows remote attackers to cause a denial of service (application crash) via a large ZSIZE value in a black-and-white (aka B/W) RGB image that triggers an invalid pointer dereference.

Affected vendor

Python

Affected product

Python

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness type (CWE)

CWE-787 — Out-of-bounds Write

Published

2010-05-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 4.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2009-4134

Confirm whether Python Python is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-4134.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-4134

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