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AUSCERT External Security Bulletin Redistribution
ESB-2019.0507
tiff security update
19 February 2019
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AusCERT Security Bulletin Summary
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Product: tiff
Publisher: Debian
Operating System: Debian GNU/Linux 8
Impact/Access: Denial of Service -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-7663 CVE-2018-19210 CVE-2018-17000
Reference: ESB-2018.3930
ESB-2018.3809
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html
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Package : tiff
Version : 4.0.3-12.3+deb8u8
CVE ID : CVE-2018-17000 CVE-2018-19210 CVE-2019-7663
Brief introduction
CVE-2018-17000
A NULL pointer dereference in the function _TIFFmemcmp at tif_unix.c
(called from TIFFWriteDirectoryTagTransferfunction) allows an
attacker to cause a denial-of-service through a crafted tiff file. This
vulnerability can be triggered by the executable tiffcp.
CVE-2018-19210
There is a NULL pointer dereference in the TIFFWriteDirectorySec function
in tif_dirwrite.c that will lead to a denial of service attack, as
demonstrated by tiffset.
CVE-2019-7663
An Invalid Address dereference was discovered in
TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c,
affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote
attackers could leverage this vulnerability to cause a denial-of-service
via a crafted tiff file.
We believe this is the same as CVE-2018-17000 (above).
For Debian 8 "Jessie", these problems have been fixed in version
4.0.3-12.3+deb8u8.
We recommend that you upgrade your tiff packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
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