DescriptionThe TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs862707

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libytnef (PTS)stretch1.9.2-2vulnerable
bullseye, sid1.9.3-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[stretch] - libytnef <no-dsa> (Minor issue, can be fixed via a point update)
[jessie] - libytnef <no-dsa> (Minor issue, can be fixed via a point update)
[wheezy] - libytnef <no-dsa> (Minor issue)

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