Ubuntu update for openssl



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-5678
CVE-2024-0727
CWE-ID CWE-399
CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
Ubuntu
Operating systems & Components / Operating system

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

libssl1.0.0 (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: #VU82894

Risk: Medium

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:Green]

CVE-ID: CVE-2023-5678

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 DH_generate_key() and DH_check_pub_key() functions. 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: 16.04 - 18.04

libssl1.1 (Ubuntu package): before Ubuntu Pro

libssl1.0.0 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6632-1


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) NULL pointer dereference

EUVDB-ID: #VU85808

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-0727

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error when processing fields in the PKCS12 certificate. A remote attacker can pass specially crafted certificate to the server and perform a denial of service (DoS) attack.

Mitigation

Update the affected package openssl to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

libssl1.1 (Ubuntu package): before Ubuntu Pro

libssl1.0.0 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6632-1


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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