ytnef 1.9.3 release, fixing a number of security issues :

  - CVE-2017-9470

  - CVE-2017-9471

  - CVE-2017-9474

  - CVE-2017-9058

  - CVE-2017-12142

  - CVE-2017-12141

  - CVE-2017-12144

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several issues were discovered in libytnef, a library used to decode application/ms-tnef e-mail attachments. Multiple heap overflows, out-of-bound writes and reads, NULL pointer dereferences and infinite loops could be exploited by tricking a user into opening a maliciously crafted winmail.dat file.

CVE-2017-6298 NULL pointer Deref / calloc return value not checked

CVE-2017-6299 Infinite Loop / DoS in the TNEFFillMapi function in lib/ytnef.c

CVE-2017-6300 Buffer Overflow in version field in lib/tnef-types.h

CVE-2017-6301 Out of Bounds Reads

CVE-2017-6302 Integer Overflow

CVE-2017-6303 Invalid Write and Integer Overflow

CVE-2017-6304 Out of Bounds read

CVE-2017-6305 Out of Bounds read and write

CVE-2017-6801 Out-of-bounds access with fields of Size 0 in TNEFParse() in libytnef

CVE-2017-6802 Heap-based buffer over-read on incoming Compressed RTF Streams, related to DecompressRTF() in libytnef

For Debian 7 'Wheezy', these problems have been fixed in version 1.5-4+deb7u1.

We recommend that you upgrade your libytnef packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4615-1 advisory.

    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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3288-1 advisory.

    It was discovered that libytnef incorrectly handled malformed TNEF streams. If a user were tricked into     opening a specially crafted TNEF attachment, an attacker could cause a denial of service or possibly     execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
125273	Fedora 30 : 1:ytnef (2019-7d7083b8be)	Nessus	Fedora Local Security Checks	5/20/2019	5/21/2024	critical
100070	Debian DSA-3846-1 : libytnef - security update	Nessus	Debian Local Security Checks	5/10/2017	1/11/2021	high
99044	Debian DLA-878-1 : libytnef security update	Nessus	Debian Local Security Checks	3/30/2017	1/11/2021	high
142370	Ubuntu 16.04 LTS : Yerase's TNEF vulnerabilities (USN-4615-1)	Nessus	Ubuntu Local Security Checks	11/4/2020	8/27/2024	high
100219	Ubuntu 14.04 LTS : libytnef vulnerabilities (USN-3288-1)	Nessus	Ubuntu Local Security Checks	5/16/2017	8/27/2024	high

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