CVE-2019-7663

Public Exploit

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.

6.5

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.61%

Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory debian.org

Affected: n/a n/a

References

Link	Tags
http://bugzilla.maptools.org/show_bug.cgi?id=2833	issue tracking patch exploit third party advisory
https://usn.ubuntu.com/3906-1/	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html	third party advisory mailing list
https://usn.ubuntu.com/3906-2/	third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html	mailing list third party advisory vendor advisory
https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39	third party advisory patch
https://security.gentoo.org/glsa/202003-25	vendor advisory
https://www.debian.org/security/2020/dsa-4670	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-7663?: CVE-2019-7663 has been scored as a medium severity vulnerability.
How to fix CVE-2019-7663?: To fix CVE-2019-7663, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-7663 being actively exploited in the wild?: It is possible that CVE-2019-7663 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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