VulnerabilityModified
CVE-2009-4049
Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast!
HIGH 7.2EPSS 1.10%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 2.0
- 7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 1.10% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- avast/avast antivirus home · avast/avast antivirus professional
- Source
- cve@mitre.org
References
- http://secunia.com/advisories/37368Vendor Advisory
- 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/37031Exploit
- http://www.vupen.com/english/advisories/2009/3266Vendor Advisory
- https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php
- http://secunia.com/advisories/37368Vendor Advisory
- 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/37031Exploit
- http://www.vupen.com/english/advisories/2009/3266Vendor Advisory
- https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.