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.

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.

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.

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

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 1 of 9. Null     Pointer Deref / calloc return value not checked. (CVE-2017-6298)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 2 of 9. Infinite     Loop / DoS in the TNEFFillMapi function in lib/ytnef.c. (CVE-2017-6299)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 3 of 9. Buffer     Overflow in version field in lib/tnef-types.h. (CVE-2017-6300)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 4 of 9. Out of     Bounds Reads. (CVE-2017-6301)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 5 of 9. Integer     Overflow. (CVE-2017-6302)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 6 of 9. Invalid     Write and Integer Overflow. (CVE-2017-6303)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 7 of 9. Out of     Bounds read. (CVE-2017-6304)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 8 of 9. Out of     Bounds read and write. (CVE-2017-6305)

  - An issue was discovered in ytnef before 1.9.1. This is related to a patch described as 9 of 9. Directory     Traversal using the filename; SanitizeFilename function in settings.c. (CVE-2017-6306)

  - An issue was discovered in ytnef before 1.9.2. An invalid memory access (heap-based buffer over-read) can     occur during handling of LONG data types, related to MAPIPrint() in libytnef. (CVE-2017-6800)

  - An issue was discovered in ytnef before 1.9.2. There is a potential out-of-bounds access with fields of     Size 0 in TNEFParse() in libytnef. (CVE-2017-6801)

  - An issue was discovered in ytnef before 1.9.2. There is a potential heap-based buffer over-read on     incoming Compressed RTF Streams, related to DecompressRTF() in libytnef. (CVE-2017-6802)

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

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.

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

ID	Name	Product	Family	Published	Updated	Severity
125273	Fedora 30 : 1:ytnef (2019-7d7083b8be)	Nessus	Fedora Local Security Checks	5/20/2019	1/15/2020	critical
99044	Debian DLA-878-1 : libytnef security update	Nessus	Debian Local Security Checks	3/30/2017	1/11/2021	high
100070	Debian DSA-3846-1 : libytnef - security update	Nessus	Debian Local Security Checks	5/10/2017	1/11/2021	high
142370	Ubuntu 16.04 LTS : Yerase's TNEF vulnerabilities (USN-4615-1)	Nessus	Ubuntu Local Security Checks	11/4/2020	10/20/2023	high
100219	Ubuntu 14.04 LTS : libytnef vulnerabilities (USN-3288-1)	Nessus	Ubuntu Local Security Checks	5/16/2017	10/20/2023	high

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