Medium severity · published Feb 9, 2019
CVE-2019-7663
An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function…
6.5
CVSS
3.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.4% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
LE
Leap · Opensuse
15.0 · source: NVD
LI
Libtiff · Libtiff
4.0.10 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-7663
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-7663
Exploit
http://bugzilla.maptools.org/show_bug.cgi?id=2833
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html
Patch
https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39
Mailing List
https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html
security.gentoo.org
https://security.gentoo.org/glsa/202003-25
Third Party Advisory
https://usn.ubuntu.com/3906-1/
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