Vulnerability Report

CVE-2009-4049

Title: Avast Avast Antivirus Home Auth Bypass

Auth Bypass

Proof Of Concept

PoC Available for CVE-2009-4049

CWE Category CWE-119
Published Date Nov 23, 2009
Modified Date Jun 16, 2026
Exploit Status Available
Score 7.2 CVSS v2.0
Exploit Probability (EPSS)
1.10%

Vulnerability Summary

CVE-2009-4049: Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.

Impacted Vendors

A
avast 2

Reference Links

http://secunia.com/advisories/37368 http://www.efblog.net/2009/11/avast-aswrdrsys-kernel-pool-corruption.html http://www.securityfocus.com/archive/1/507891/100/0/threaded http://www.securityfocus.com/bid/37031 http://www.vupen.com/english/advisories/2009/3266 https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php http://secunia.com/advisories/37368 http://www.efblog.net/2009/11/avast-aswrdrsys-kernel-pool-corruption.html http://www.securityfocus.com/archive/1/507891/100/0/threaded http://www.securityfocus.com/bid/37031 http://www.vupen.com/english/advisories/2009/3266 https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.2
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-4049 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/fengjixuchui/CVE-2009-4049
View Code
Exploit-DB https://www.exploit-db.com/exploits/33360
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.