Out-of-bounds write in Python - CVE-2009-4134
Published: February 18, 2020 / Updated: June 3, 2025
Vulnerability identifier: #VU110155
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2009-4134
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Python.org
Affected software:
Python
Python
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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.
How to mitigate CVE-2009-4134
Install update from vendor's website.
Sources
- http://bugs.python.org/issue8678
- http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
- http://secunia.com/advisories/42888
- http://secunia.com/advisories/43068
- http://secunia.com/advisories/43364
- http://support.apple.com/kb/HT4435
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:215
- http://www.redhat.com/support/errata/RHSA-2011-0027.html
- http://www.redhat.com/support/errata/RHSA-2011-0260.html
- http://www.securityfocus.com/bid/40361
- http://www.vupen.com/english/advisories/2011/0122
- http://www.vupen.com/english/advisories/2011/0212
- http://www.vupen.com/english/advisories/2011/0413
- https://bugzilla.redhat.com/show_bug.cgi?id=541698