Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libtiff | Libtiff | 4.0.10 |
| Debian | Debian Linux | 8.0 |
| Canonical | Ubuntu Linux | 12.04 |
| Opensuse | Leap | 15.0 |
References
- http://bugzilla.maptools.org/show_bug.cgi?id=2833ExploitIssue TrackingPatch
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.htmlMailing ListThird Party Advisory
- https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2dPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00026.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202003-25
- https://usn.ubuntu.com/3906-1/Third Party Advisory
- https://usn.ubuntu.com/3906-2/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4670
- http://bugzilla.maptools.org/show_bug.cgi?id=2833ExploitIssue TrackingPatch
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.htmlMailing ListThird Party Advisory
- https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2dPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00026.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202003-25
- https://usn.ubuntu.com/3906-1/Third Party Advisory
- https://usn.ubuntu.com/3906-2/Third Party Advisory
FAQ
What is CVE-2019-7663?
CVE-2019-7663 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 ...
How severe is CVE-2019-7663?
CVE-2019-7663 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-7663?
Check the references section above for vendor advisories and patch information. Affected products include: Libtiff Libtiff, Debian Debian Linux, Canonical Ubuntu Linux, Opensuse Leap.