Ubuntu update for openssl



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-3446
CVE-2023-3817
CWE-ID CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
Ubuntu
Operating systems & Components / Operating system

openssl (Ubuntu package)
Operating systems & Components / Operating system package or component

libssl1.1 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource management error

EUVDB-ID: #VU78463

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3446

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the DH_check(), DH_check_ex() and EVP_PKEY_param_check() function when processing a DH key or DH parameters. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package openssl to the latest version.

Vulnerable software versions

Ubuntu: 20.04

openssl (Ubuntu package): before 1.1.1f-1ubuntu2.20

libssl1.1 (Ubuntu package): before 1.1.1f-1ubuntu2.20

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6435-2


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) Resource management error

EUVDB-ID: #VU78798

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-3817

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application when checking the long DH keys. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package openssl to the latest version.

Vulnerable software versions

Ubuntu: 20.04

openssl (Ubuntu package): before 1.1.1f-1ubuntu2.20

libssl1.1 (Ubuntu package): before 1.1.1f-1ubuntu2.20

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6435-2


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.



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