Summaryinfo

A vulnerability was found in UPX 3.95. It has been rated as critical. This issue affects the function canUnpack of the file p_mach.cpp of the component Mach-O File Handler. The manipulation leads to input validation. The identification of this vulnerability is CVE-2019-20053. An attack has to be approached locally. There is no exploit available. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability was found in UPX 3.95. It has been declared as critical. This vulnerability affects the function canUnpack of the file p_mach.cpp of the component Mach-O File Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

An invalid memory address dereference was discovered in the canUnpack function in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.

The weakness was published 12/27/2019. This vulnerability was named CVE-2019-20053 since 12/27/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

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

Similar entry is available at VDB-147848. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• UPX

Version

• 3.95

License

• free

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