CVE-2017-13727 - Reachable Assertion

Severity

43%

Complexity

86%

Confidentiality

48%

There is a reachable assertion abort in the function TIFFWriteDirectoryTagSubifd() in LibTIFF 4.0.8, related to tif_dirwrite.c and a SubIFD tag. A crafted input will lead to a remote denial of service attack.

There is a reachable assertion abort in the function TIFFWriteDirectoryTagSubifd() in LibTIFF 4.0.8, related to tif_dirwrite.c and a SubIFD tag. A crafted input will lead to a remote denial of service attack.

CVSS 3.0 Base Score 6.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P).

Demo Examples

Reachable Assertion

CWE-617

In the excerpt below, an AssertionError (an unchecked exception) is thrown if the user hasn't entered an email address in an HTML form.


               
assert email != null;

Overview

First reported 7 years ago

2017-08-29 06:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

LibTIFF 4.0.8

4.0.8

References

http://bugzilla.maptools.org/show_bug.cgi?id=2728

Issue Tracking, Third Party Advisory

100524

USN-3602-1

DSA-4100

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