LibTIFF 4.0.6 TIFFFetchNormalTag TIFF_SETGET_C16ASCII/TIFF_SETGET_C32_ASCII null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in LibTIFF 4.0.6. The affected element is the function TIFFFetchNormalTag. This manipulation of the argument TIFF_SETGET_C16ASCII/TIFF_SETGET_C32_ASCII causes null pointer dereference. This vulnerability is handled as CVE-2016-9448. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in LibTIFF 4.0.6 (Image Processing Software). It has been declared as problematic. Affected by this vulnerability is the function TIFFFetchNormalTag. The manipulation of the argument TIFF_SETGET_C16ASCII/TIFF_SETGET_C32_ASCII with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

The TIFFFetchNormalTag function in LibTiff 4.0.6 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by setting the tags TIFF_SETGET_C16ASCII or TIFF_SETGET_C32_ASCII to values that access 0-byte arrays. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-9297.

The bug was discovered 11/11/2016. The weakness was released 01/27/2017 by Henri Salo (Website). It is possible to read the advisory at bugzilla.maptools.org. This vulnerability is known as CVE-2016-9448 since 11/18/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 26 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95649 (openSUSE Security Update : tiff (openSUSE-2016-1425)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169468 (SUSE Enterprise Linux Security Update for tiff (SUSE-SU-2016:3301-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95649) and SecurityFocus (BID 94420†). Entries connected to this vulnerability are available at VDB-81885, VDB-92312, VDB-95086 and VDB-95523. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95649
Nessus Name: openSUSE Security Update : tiff (openSUSE-2016-1425)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703762
OpenVAS Name: Debian Security Advisory DSA 3762-1 (tiff - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/11/2016 🔍
11/18/2016 +7 days 🔍
11/18/2016 +0 days 🔍
12/07/2016 +19 days 🔍
12/08/2016 +1 days 🔍
01/27/2017 +50 days 🔍
01/27/2017 +0 days 🔍
01/27/2017 +0 days 🔍
08/04/2020 +1285 days 🔍

Sourcesinfo

Product: libtiff.org

Advisory: bugzilla.maptools.org
Researcher: Henri Salo
Status: Not defined

CVE: CVE-2016-9448 (🔍)
GCVE (CVE): GCVE-0-2016-9448
GCVE (VulDB): GCVE-100-96091

OVAL: 🔍

SecurityFocus: 94420 - LibTIFF 'tif_dirread.c' Incomplete Fix Denial of Service Vulnerability
OSVDB: - CVE-2016-9448 - LibTIFF - Out-of-Bounds Write Issue

See also: 🔍

Entryinfo

Created: 01/27/2017 21:13
Updated: 08/04/2020 18:15
Changes: 01/27/2017 21:13 (73), 08/04/2020 18:15 (8)
Complete: 🔍
Cache ID: 216:E49:103

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