agronholm cbor2 up to 5.6.1 Parser buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in agronholm cbor2 up to 5.6.1. The affected element is an unknown function of the component Parser. Executing a manipulation can lead to buffer overflow. This vulnerability appears as CVE-2024-26134. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in agronholm cbor2 up to 5.6.1 and classified as critical. This vulnerability affects an unknown function of the component Parser. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in version 5.5.1 and prior to version 5.6.2, an attacker can crash a service using cbor2 to parse a CBOR binary by sending a long enough object. Version 5.6.2 contains a patch for this issue.

The weakness was presented 02/20/2024 as GHSA-375g-39jq-vq7m. The advisory is shared for download at github.com. This vulnerability was named CVE-2024-26134 since 02/14/2024. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211106 (Fedora 41 : python-cbor2 (2024-e63fc9eb58)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.6.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 387755eacf0be35591a478d3c67fe10618a6d542 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (211106). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211106
Nessus Name: Fedora 41 : python-cbor2 (2024-e63fc9eb58)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cbor2 5.6.2
Patch: 387755eacf0be35591a478d3c67fe10618a6d542

Timelineinfo

02/14/2024 🔍
02/20/2024 +6 days 🔍
02/20/2024 +0 days 🔍
01/02/2025 +317 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-375g-39jq-vq7m
Status: Confirmed

CVE: CVE-2024-26134 (🔍)
GCVE (CVE): GCVE-0-2024-26134
GCVE (VulDB): GCVE-100-254128

Entryinfo

Created: 02/20/2024 07:51
Updated: 01/02/2025 15:37
Changes: 02/20/2024 07:51 (54), 11/17/2024 07:13 (17), 01/02/2025 15:37 (12)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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