A vulnerability, which was classified as very critical, has been found in Dawningsoft PowerCHM 5.7. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in Dawningsoft PowerCHM 5.7 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via an HTML file with a link to a long URL, as demonstrated by a .rar URL.

The weakness was presented 04/21/2009 (Website). The advisory is shared for download at milw0rm.com. This vulnerability is handled as CVE-2009-1352 since 04/21/2009. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/05/2018).

A public exploit has been developed by SuB-ZeRo and been published before and not just after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 7 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 vulnerability is also documented in the databases at X-Force (49882) and Exploit-DB (8434).

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Vendor

• Dawningsoft

Name

• PowerCHM

Version

• 5.7

CPE 2.3info

• 🔍

CPE 2.2info

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