mtrojnar osslsigncode up to 2.3 sys buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in mtrojnar osslsigncode up to 2.3 and classified as critical. This affects an unknown function in the library sys. Such manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2023-36377. Local access is required to approach this attack. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in mtrojnar osslsigncode up to 2.3. Affected by this issue is an unknown code in the library sys. 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. CVE summarizes:

Buffer Overflow vulnerability in mtrojnar osslsigncode v.2.3 and before allows a local attacker to execute arbitrary code via a crafted .exe, .sys, and .dll files.

The weakness was disclosed 07/04/2023. The advisory is available at github.com. This vulnerability is handled as CVE-2023-36377 since 06/21/2023. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 280138 (Debian dla-4426 : osslsigncode - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.3 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (280138). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 280138
Nessus Name: Debian dla-4426 : osslsigncode - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: osslsigncode 2.3

Timelineinfo

06/21/2023 🔍
07/04/2023 +13 days 🔍
07/04/2023 +0 days 🔍
12/30/2025 +910 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2023-36377 (🔍)
GCVE (CVE): GCVE-0-2023-36377
GCVE (VulDB): GCVE-100-232922

Entryinfo

Created: 07/04/2023 07:28
Updated: 12/30/2025 19:20
Changes: 07/04/2023 07:28 (41), 07/23/2023 07:09 (11), 12/30/2025 19:20 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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