Multiple vulnerabilities in OSS Support Tools

Published: 2024-04-17

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-48795 CVE-2023-1370
CWE-ID	CWE-326 CWE-674
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	OSS Support Tools Client/Desktop applications / Software for system administration
Vendor	Oracle

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Inadequate encryption strength

EUVDB-ID: #VU84537

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-48795

CWE-ID: CWE-326 - Inadequate Encryption Strength

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to incorrect implementation of the SSH Binary Packet Protocol (BPP), which mishandles the handshake phase and the use of sequence numbers. A remote attacker can perform MitM attack and delete the SSH2_MSG_EXT_INFO message sent before authentication starts, allowing the attacker to disable a subset of the keystroke timing obfuscation features introduced in OpenSSH 9.5.

The vulnerability was dubbed "Terrapin attack" and it affects both client and server implementations.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OSS Support Tools: 24.1.24.1.16

External links

http://www.oracle.com/security-alerts/cpuapr2024.html?556979

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Uncontrolled Recursion

EUVDB-ID: #VU75044

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1370

CWE-ID: CWE-674 - Uncontrolled Recursion