Vulnerability CVE-2018-5784
Published: 2018-01-19

Description:
In LibTIFF 4.0.9, there is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This occurs because the declared number of directory entries is not validated against the actual number of directory entries.

Type:

CWE-400

 (Uncontrolled Resource Consumption ('Resource Exhaustion'))

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Libtiff -> Libtiff 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://bugzilla.maptools.org/show_bug.cgi?id=2772
https://gitlab.com/libtiff/libtiff/commit/473851d211cf8805a161820337ca74cc9615d6ef
https://lists.debian.org/debian-lts-announce/2018/05/msg00022.html
https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html
https://usn.ubuntu.com/3602-1/
https://usn.ubuntu.com/3606-1/
https://www.debian.org/security/2018/dsa-4349
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