OpenBSD up to 7.3/7.4 Network Buffer buffer size

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBSD up to 7.3/7.4. It has been rated as critical. The affected element is an unknown function of the component Network Buffer Handler. The manipulation leads to buffer size. This vulnerability is uniquely identified as CVE-2023-52558. The attack is possible to be carried out remotely. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in OpenBSD up to 7.3/7.4 (Operating System). It has been rated as critical. This issue affects an unknown function of the component Network Buffer Handler. The manipulation with an unknown input leads to a buffer size vulnerability. Using CWE to declare the problem leads to CWE-131. The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow. Impacted is availability. The summary by CVE is:

In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.

The weakness was disclosed 03/01/2024. The advisory is shared at ftp.openbsd.org. The identification of this vulnerability is CVE-2023-52558. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/20/2024).

Applying the patch 7.3 Errata 019/7.4 Errata 002 is able to eliminate this problem.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer size
CWE: CWE-131 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 7.3 Errata 019/7.4 Errata 002

Timelineinfo

03/01/2024 🔍
03/01/2024 +0 days 🔍
03/01/2024 +0 days 🔍
11/20/2024 +264 days 🔍

Sourcesinfo

Advisory: 7b4d35e0a60ba1dd4daf4b1c2932020a22463a89
Status: Confirmed

CVE: CVE-2023-52558 (🔍)
GCVE (CVE): GCVE-0-2023-52558
GCVE (VulDB): GCVE-100-255437

Entryinfo

Created: 03/01/2024 17:51
Updated: 11/20/2024 01:28
Changes: 03/01/2024 17:51 (39), 04/04/2024 02:35 (17), 11/20/2024 01:28 (12)
Complete: 🔍
Cache ID: 216::103

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