CVE-2020-2558 Denial of service in Solaris Operating System

What is CVE-2020-2558?

CVE-2020-2558 is a medium-severity denial of service vulnerability in Oracle Solaris, published on 15 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). The supported version that is affected is 11. Easily exploitable vulnerability allows unauthenticated attacker with network access via SMB to compromise Oracle Solaris. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Solaris. CVSS 3.0 Base Score 5.8 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L).

Which versions are affected by CVE-2020-2558?

It affects 1 product.

Products include Oracle Solaris.

How do I fix CVE-2020-2558?

No fix has been published for CVE-2020-2558 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-2558 being exploited?

There is no known exploitation of CVE-2020-2558 in the wild and no public exploit code.

Other vulnerabilities in Oracle Solaris

• CVE-2020-14871 Oracle Solaris and Zettabyte File System (ZFS) Unspecified Exploited Critical 10.0
• CVE-2019-3010 Oracle Solaris Privilege Escalation Exploited High 8.8
• CVE-2026-46978 Missing authorization in Oracle Solaris Critical 10.0
• CVE-2017-3623 Other in Solaris Operating System Critical 10.0
• CVE-2014-0397 Memory corruption in n/a Critical 10.0

All Oracle Solaris vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9pj8-8hq8-5gvc.