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Fencer Vulns
medium 5.0

CVE-2009-4134 json

Buffer underflow in the rgbimg module in Python 2.5 allows remote attackers to cause a denial of service (application crash) via a large ZS…

published 2010-05-27 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-4104

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.4%
EPSS 4.4% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

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.

Patch / fix

  • python RHEL 4 2.3.4-14.9.el4
  • tkinter RHEL 4 2.3.4-14.9.el4
  • python-tools RHEL 4 2.3.4-14.9.el4
  • python RHEL 5 2.4.3-43.el5
  • tkinter RHEL 5 2.4.3-43.el5
  • python-libs RHEL 5 2.4.3-43.el5
  • python-tools RHEL 5 2.4.3-43.el5

red hat advisories RHSA-2011:0260RHSA-2011:0027

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-4134 updated cvss 5.1

python: rgbimg: multiple security issues

  • Red Hat Enterprise Linux (v. 5 server) python 2.4.3-43.el5, tkinter 2.4.3-43.el5, python-libs 2.4.3-43.el5, python-tools 2.4.3-43.el5
    fixed: vendor fix RHSA-2011:0027
  • Red Hat Enterprise Linux AS version 4 python 2.3.4-14.9.el4, tkinter 2.3.4-14.9.el4, python-tools 2.3.4-14.9.el4
    fixed: vendor fix RHSA-2011:0260
  • Red Hat Enterprise Linux Desktop (v. 5 client) python 2.4.3-43.el5, tkinter 2.4.3-43.el5, python-libs 2.4.3-43.el5, python-tools 2.4.3-43.el5
    fixed: vendor fix RHSA-2011:0027
  • Red Hat Enterprise Linux Desktop version 4 python 2.3.4-14.9.el4, tkinter 2.3.4-14.9.el4, python-tools 2.3.4-14.9.el4
    fixed: vendor fix RHSA-2011:0260
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) python 2.4.3-43.el5, tkinter 2.4.3-43.el5, python-libs 2.4.3-43.el5, python-tools 2.4.3-43.el5
    fixed: vendor fix RHSA-2011:0027
  • Red Hat Enterprise Linux ES version 4 python 2.3.4-14.9.el4, tkinter 2.3.4-14.9.el4, python-tools 2.3.4-14.9.el4 Red Hat Enterprise Linux WS version 4 python 2.3.4-14.9.el4, tkinter 2.3.4-14.9.el4, python-tools 2.3.4-14.9.el4
    fixed: vendor fix RHSA-2011:0260

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.42% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.