LibTIFF 4.0.9 tif_lzw.c LZWDecode null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in LibTIFF 4.0.9 and classified as problematic. Affected is the function LZWDecode of the file tif_lzw.c. Executing a manipulation can lead to null pointer dereference. The identification of this vulnerability is CVE-2018-18661. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in LibTIFF 4.0.9 (Image Processing Software) and classified as problematic. This vulnerability affects the function LZWDecode of the file tif_lzw.c. The manipulation 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. CVE summarizes:

An issue was discovered in LibTIFF 4.0.9. There is a NULL pointer dereference in the function LZWDecode in the file tif_lzw.c.

The bug was discovered 10/25/2018. The weakness was shared 10/26/2018 (Website). The advisory is shared for download at bugzilla.maptools.org. This vulnerability was named CVE-2018-18661 since 10/26/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119297 (openSUSE Security Update : tiff (openSUSE-2018-1479)), 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 171720 (SUSE Enterprise Linux Security Update for tiff (SUSE-SU-2018:3879-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119297) and SecurityFocus (BID 105762†). The entries VDB-81883, VDB-81884, VDB-92306 and VDB-93967 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 119297
Nessus Name: openSUSE Security Update : tiff (openSUSE-2018-1479)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

10/25/2018 🔍
10/26/2018 +0 days 🔍
10/26/2018 +0 days 🔍
10/26/2018 +0 days 🔍
10/26/2018 +0 days 🔍
10/27/2018 +1 days 🔍
11/29/2018 +33 days 🔍
11/30/2018 +1 days 🔍
06/03/2023 +1646 days 🔍

Sourcesinfo

Product: libtiff.org

Advisory: RHSA-2019:2053
Status: Confirmed

CVE: CVE-2018-18661 (🔍)
GCVE (CVE): GCVE-0-2018-18661
GCVE (VulDB): GCVE-100-126004
SecurityFocus: 105762 - LibTIFF CVE-2018-18661 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 10/27/2018 18:29
Updated: 06/03/2023 09:35
Changes: 10/27/2018 18:29 (74), 04/06/2020 21:11 (5), 06/03/2023 09:35 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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