LibTIFF 4.0.10 libtiff/tif_dirwrite.c cpSeparateBufToContigBuf memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in LibTIFF 4.0.10. It has been classified as problematic. This issue affects the function cpSeparateBufToContigBuf of the file libtiff/tif_dirwrite.c. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2019-7663. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in LibTIFF 4.0.10 (Image Processing Software). It has been classified as problematic. This affects the function cpSeparateBufToContigBuf of the file libtiff/tif_dirwrite.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.

The bug was discovered 02/11/2019. The weakness was published 02/09/2019 (Website). It is possible to read the advisory at debian.org. This vulnerability is uniquely identified as CVE-2019-7663 since 02/09/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 255166 (Linux Distros Unpatched Vulnerability : CVE-2019-7663), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197390 (Ubuntu Security Notification for LibTiff Vulnerabilities (USN-3906-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (255166) and SecurityFocus (BID 105342†). Similar entries are available at VDB-120001, VDB-124018 and VDB-129077. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 255166
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2019-7663

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: gitlab.com

Timelineinfo

09/13/2018 🔍
02/09/2019 +149 days 🔍
02/09/2019 +0 days 🔍
02/10/2019 +1 days 🔍
02/11/2019 +1 days 🔍
08/26/2025 +2388 days 🔍

Sourcesinfo

Product: libtiff.org

Advisory: 802d3cbf3043be5dce5317e140ccb1c17a6a2d39
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-7663 (🔍)
GCVE (CVE): GCVE-0-2019-7663
GCVE (VulDB): GCVE-100-130695
SecurityFocus: 105342 - LibTIFF 'tif_unix.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/10/2019 10:20
Updated: 08/26/2025 19:18
Changes: 02/10/2019 10:20 (59), 05/09/2020 15:17 (5), 07/09/2023 08:57 (4), 07/09/2023 09:01 (1), 08/26/2025 19:18 (21)
Complete: 🔍
Cache ID: 216::103

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