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USN-4615-1: Yerase's TNEF vulnerabilities

3 November 2020

Yerase's TNEF could be made to crash if it received specially crafted input.



  • libytnef - Yerases TNEF Stream Reader library


It was discovered that Yerase's TNEF had null pointer dereferences, infinite
loop, buffer overflow, out of bounds reads, directory traversal issues and
other vulnerabilities. An attacker could use those issues to cause a crash
and consequently a denial of service. (CVE-2017-6298, CVE-2017-6299,
CVE-2017-6300, CVE-2017-6301, CVE-2017-6302, CVE-2017-6303, CVE-2017-6304,
CVE-2017-6305, CVE-2017-6306, CVE-2017-6800, CVE-2017-6801, CVE-2017-6802)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

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