ytnef 1.9.2 ytnef.c TNEFFillMapi memory corruption

Summaryinfo

A vulnerability was found in ytnef 1.9.2 and classified as problematic. The impacted element is the function TNEFFillMapi of the file ytnef.c. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2017-12141. The attack must be carried out locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ytnef 1.9.2 (Document Reader Software) and classified as problematic. Affected by this issue is the function TNEFFillMapi of the file ytnef.c. 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 availability. CVE summarizes:

In ytnef 1.9.2, a heap-based buffer overflow vulnerability was found in the function TNEFFillMapi in ytnef.c, which allows attackers to cause a denial of service via a crafted file.

The bug was discovered 06/08/2017. The weakness was presented 08/02/2017 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2017-12141 since 08/01/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 55 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110286 (Ubuntu 14.04 LTS : libytnef vulnerabilities (USN-3667-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197154 (Ubuntu Security Notification for Libytnef Vulnerabilities (USN-3667-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 11 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110286). See VDB-101470, VDB-101620, VDB-102039 and VDB-102041 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Document Reader Software

Name

• ytnef

Version

• 1.9.2

License

• open-source

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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