LibTIFF 4.5.0 uv_encode buffer overflow

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 4.5.0. It has been rated as critical. Affected is the function uv_encode. The manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2023-26966. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, has been found in LibTIFF 4.5.0 (Image Processing Software). This issue affects the function uv_encode. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

libtiff 4.5.0 is vulnerable to Buffer Overflow in uv_encode() when libtiff reads a corrupted little-endian TIFF file and specifies the output to be big-endian.

The weakness was published 06/29/2023 as 530. It is possible to read the advisory at gitlab.com. The identification of this vulnerability is CVE-2023-26966 since 02/27/2023. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 214399 (Debian dla-4026 : libtiff-dev - security update), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at gitlab.com.

The vulnerability is also documented in the databases at Tenable (214399) and EUVD (EUVD-2023-30756). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

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: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214399
Nessus Name: Debian dla-4026 : libtiff-dev - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: gitlab.com

Timelineinfo

02/27/2023 🔍
06/29/2023 +121 days 🔍
06/29/2023 +0 days 🔍
11/13/2025 +868 days 🔍

Sourcesinfo

Product: libtiff.org

Advisory: 530
Status: Confirmed

CVE: CVE-2023-26966 (🔍)
GCVE (CVE): GCVE-0-2023-26966
GCVE (VulDB): GCVE-100-232715
EUVD: 🔍

Entryinfo

Created: 06/29/2023 22:34
Updated: 11/13/2025 09:44
Changes: 06/29/2023 22:34 (41), 07/21/2023 15:17 (11), 01/21/2025 01:07 (17), 04/25/2025 10:10 (3), 11/13/2025 09:44 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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