What’s Vulnerable › Vulnerabilities

CVE-2019-7663

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-02-09 · updated 2026-06-17

Description

An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 18.10
• Debian Linux: 8.0
• libtiff: 4.0.10
• openSUSE Leap: 15.0

References

• http://bugzilla.maptools.org/show_bug.cgi?id=2833
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html
• https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39
• https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html
• https://security.gentoo.org/glsa/202003-25
• https://usn.ubuntu.com/3906-1/
• https://usn.ubuntu.com/3906-2/
• https://www.debian.org/security/2020/dsa-4670
• http://bugzilla.maptools.org/show_bug.cgi?id=2833
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html
• https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39
• https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html

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