What is CVE-2017-9815?

CVE-2017-9815 is a medium-severity vulnerability in Libtiff, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2017-06-22.

How severe is CVE-2017-9815?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Libtiff

CVE-2017-9815

In LibTIFF 4.0.7, the TIFFReadDirEntryLong8Array function in libtiff/tif_dirread.c mishandles a malloc operation, which allows attackers to cause a denial of service (memory leak within the function _TIFFmalloc in tif_unix.c) via a crafted file.

Published 2017-06-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Libtiff — versions 4.0.7
Canonical Ubuntu Linux — versions 14.04, 16.04

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

usn.ubuntu.com/3602-1/ (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/99235 (VDB Entry, Third Party Advisory, vdb-entry)
bugzilla.maptools.org/show_bug.cgi (Third Party Advisory, Issue Tracking)
somevulnsofadlab.blogspot.jp/2017/06/libtiffmemory-leak-in-tiffmalloc.html (Third Party Advisory)

Frequently asked questions

What is CVE-2017-9815?: CVE-2017-9815 is a medium-severity vulnerability in Libtiff, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2017-06-22.
How severe is CVE-2017-9815?: Medium severity. CVSS v3 base score is 6.5 out of 10.