A vulnerability in the OLE2 file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS)…
A vulnerability in the OLE2 file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an incorrect check for end-of-string values during scanning, which may result in a heap buffer over-read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software and consuming available system resources. For a description of this vulnerability, see the ClamAV blog .
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
https://cwe.mitre.org/data/definitions/122.html →Open in CWE collection →The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
https://cwe.mitre.org/data/definitions/126.html →Open in CWE collection →This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
https://capec.mitre.org/data/definitions/92.html →Open in CAPEC collection →| Product | Vendor | Status |
|---|---|---|
| Tracked | ||
| Tracked | ||
| Tracked | ||
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| clamav | Tracked | |
| fedora | * | Tracked |
| secure_endpoint | * | Tracked |
| secure_endpoint_private_cloud | * | Tracked |