CVE-2009-0544

PyCrypto ARC2 2.0.1 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-0544. PoCs published by Mike Wiacek.

AI-analyzed exploit summary This is a unit test for PyCrypto's ARC2 cipher that includes a test case for a buffer overflow vulnerability (CVE-2009-0544). The test verifies that an overly long key (16384 bytes) raises a ValueError, which was the fix for the vulnerability.

Description

Buffer overflow in the PyCrypto ARC2 module 2.0.1 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large ARC2 key length.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Mike Wiacek · pythonremotelinux
https://www.exploit-db.com/exploits/32780

This is a unit test for PyCrypto's ARC2 cipher that includes a test case for a buffer overflow vulnerability (CVE-2009-0544). The test verifies that an overly long key (16384 bytes) raises a ValueError, which was the fix for the vulnerability.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: PyCrypto (Python Cryptography Toolkit) versions prior to the fix for CVE-2009-0544
No auth needed
Prerequisites: PyCrypto library installed · Vulnerable version of PyCrypto
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (12)

Core 12
Core References
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2009:050
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/48617
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2009:049
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2009/02/07/1
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/35065
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/34199
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/33674
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2009/02/12/5
Third Party Advisory vendor-advisory x_refsource_gentoo
http://www.gentoo.org/security/en/glsa/glsa-200903-11.xml

Scores

EPSS 0.1152
EPSS Percentile 95.5%

Details

CWE
CWE-119
Status published
Products (1)
pycrypto/arc2 2.0.1
Published Feb 12, 2009
Tracked Since Feb 18, 2026