OpenSSH up to 9.5 Binary Packet Protocol Terrapin inadequate encryption

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSSH up to 9.5 and classified as critical. Affected is an unknown function of the component Binary Packet Protocol Handler. The manipulation results in inadequate encryption. This vulnerability is known as CVE-2023-48795. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenSSH up to 9.5 (Remote Access Software). It has been classified as critical. Affected is an unknown code of the component Binary Packet Protocol Handler. The manipulation with an unknown input leads to a inadequate encryption vulnerability. CWE is classifying the issue as CWE-326. The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required. The impact remains unknown.

The weakness was published 12/17/2023. The advisory is shared for download at terrapin-attack.com. This vulnerability is traded as CVE-2023-48795. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 207872 (Debian dla-3899 : python-asyncssh-doc - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.6 eliminates this vulnerability. The upgrade is hosted for download at openssh.com.

The vulnerability is also documented in the databases at Tenable (207872) and CERT Bund (WID-SEC-2024-1228). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Red Hat Enterprise Linux
  • Red Hat OpenStack
  • IBM MQ
  • Red Hat OpenShift

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Inadequate encryption
CWE: CWE-326 / CWE-310
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: 207872
Nessus Name: Debian dla-3899 : python-asyncssh-doc - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSH 9.6
Patch: git.libssh.org

Timelineinfo

11/20/2023 🔍
12/17/2023 +27 days 🔍
12/17/2023 +0 days 🔍
07/27/2025 +588 days 🔍

Sourcesinfo

Advisory: 176280
Status: Confirmed

CVE: CVE-2023-48795 (🔍)
GCVE (CVE): GCVE-0-2023-48795
GCVE (VulDB): GCVE-100-248280
CERT Bund: WID-SEC-2024-1228 - Red Hat OpenStack: Mehrere Schwachstellen

Entryinfo

Created: 12/17/2023 22:48
Updated: 07/27/2025 06:57
Changes: 12/17/2023 22:48 (32), 12/18/2023 19:19 (29), 01/12/2024 08:27 (4), 01/12/2024 08:32 (13), 09/28/2024 04:44 (17), 12/02/2024 16:39 (1), 07/27/2025 06:57 (7)
Complete: 🔍
Cache ID: 216:737:103

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

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