What is CVE-2020-14871?

CVE-2020-14871 is a critical-severity vulnerability in Oracle Solaris, classified under Out-of-bounds Write. CVSS score: 10.0/10. Published 2020-10-21.

How severe is CVE-2020-14871?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2020-14871 known to be exploited?

Yes. CVE-2020-14871 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 16 public proof-of-concept repositories are indexed.

Buffer overflow in Oracle Solaris

CVE-2020-14871

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Pluggable authentication module). Supported versions that are affected are 10 and 11. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols 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 takeover of Oracle Solaris. Note: This CVE is not exploitable for Solaris 11.1 and later releases, and ZFSSA 8.7 and later releases, thus the CVSS Base Score is 0.0. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Vulnerability class: Buffer Overflow

EPSS: 0.798 (99.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Oracle Solaris — versions 9
Oracle Corporation Solaris Operating System — versions 10, 11

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

secalert_us@oracle.com (Vendor Advisory)
secalert_us@oracle.com (VDB Entry, Third Party Advisory)
secalert_us@oracle.com (Exploit, VDB Entry, Third Party Advisory)
secalert_us@oracle.com (Exploit, VDB Entry, Third Party Advisory)
secalert_us@oracle.com (mailing-list, Mailing List, Third Party Advisory)
secalert_us@oracle.com (Exploit, VDB Entry, Third Party Advisory)
secalert_us@oracle.com (mailing-list, Patch, Mailing List)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2020-14871?: CVE-2020-14871 is a critical-severity vulnerability in Oracle Solaris, classified under Out-of-bounds Write. CVSS score: 10.0/10. Published 2020-10-21.
How severe is CVE-2020-14871?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2020-14871 known to be exploited?: Yes. CVE-2020-14871 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 16 public proof-of-concept repositories are indexed.