IObit Malware Fighter 6.2 IOCTL RegFilter.sys memory corruption

Summaryinfo

A vulnerability was found in IObit Malware Fighter 6.2. It has been declared as critical. This issue affects some unknown processing in the library RegFilter.sys of the component IOCTL Handler. The manipulation results in memory corruption. This vulnerability is identified as CVE-2018-19084. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability was found in IObit Malware Fighter 6.2 (Anti-Malware Software). It has been classified as critical. Affected is some unknown processing in the library RegFilter.sys of the component IOCTL Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

RegFilter.sys in IOBit Malware Fighter 6.2 is susceptible to a stack-based buffer overflow when an attacker uses IOCTL 0x8006E05C with a size larger than 8 bytes. This can lead to denial of service or code execution with root privileges.

The bug was discovered 11/07/2018. The weakness was released 11/10/2018 (Website). The advisory is shared for download at downwithup.github.io. This vulnerability is traded as CVE-2018-19084 since 11/07/2018. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371322 (IObit Malware Fighter 6.2 Stack-based Buffer Overflow Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-123225, VDB-124489, VDB-124490 and VDB-124491. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Anti-Malware Software

Vendor

• IObit

Name

• Malware Fighter

Version

• 6.2

License

• free

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Once again VulDB remains the best source for vulnerability data.

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