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SYNTHESIS OF THE VULNERABILITY

An attacker can use several vulnerabilities of libytnef.

Impacted products: Debian, Ubuntu.

Severity: 2/4.

Creation date: 29/03/2017.

DESCRIPTION OF THE VULNERABILITY

Several vulnerabilities were announced in libytnef.

An attacker can force a NULL pointer to be dereferenced, in order
to trigger a denial of service. [severity:1/4; CVE-2017-6298]

An attacker can generate an infinite loop via TNEFFillMapi(), in
order to trigger a denial of service. [severity:2/4; CVE-2017-6299]

An attacker can generate a buffer overflow via lib/tnef-types.h,
in order to trigger a denial of service, and possibly to run code.
[severity:2/4; CVE-2017-6300]

An attacker can force a read at an invalid address, in order to
trigger a denial of service, or to obtain sensitive information.
[severity:2/4; CVE-2017-6301]

An attacker can generate an integer overflow, in order to trigger
a denial of service, and possibly to run code. [severity:2/4;
CVE-2017-6302]

An attacker can generate a memory corruption, in order to trigger
a denial of service, and possibly to run code. [severity:2/4;
CVE-2017-6303]

An attacker can force a read at an invalid address, in order to
trigger a denial of service, or to obtain sensitive information.
[severity:2/4; CVE-2017-6304]

An attacker can generate a memory corruption, in order to trigger
a denial of service, and possibly to run code. [severity:2/4;
CVE-2017-6305]

An attacker can traverse directories via SanitizeFilename(), in
order to read a file outside the root path. [severity:2/4;
CVE-2017-6306]

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/libytnef-nine-vulnerabilities-22273