A vulnerability was found in SWFTools 0.9.2 (Programming Tool Software). It has been declared as critical. This vulnerability affects the function png_load in the library lib/png.c. The manipulation of the argument width/height with an unknown input leads to a memory corruption 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 confidentiality, integrity, and availability. CVE summarizes:

In SWFTools 0.9.2, the png_load function in lib/png.c does not properly validate an alloclen_64 multiplication of width and height values, which allows remote attackers to cause a denial of service (integer overflow, heap-based buffer overflow, and application crash) or possibly have unspecified other impact via a crafted PNG file.

The bug was discovered 11/11/2017. The weakness was shared 11/12/2017 (Website). The advisory is available at github.com. This vulnerability was named CVE-2017-16797 since 11/12/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

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

The entry VDB-109293 is related to this item.

Productinfo

Type

• Programming Tool Software

Name

• SWFTools

Version

• 0.9.2

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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