What is CVE-2019-20423?

CVE-2019-20423 is a high-severity vulnerability in Lustre, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2020-01-27.

How severe is CVE-2019-20423?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Lustre

CVE-2019-20423

In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic due to the lack of validation for specific fields of packets sent by a client. The function target_handle_connect() mishandles a certain size value when a client connects to a server, because of an integer signedness error.

Vulnerability class: Buffer Overflow

EPSS: 0.021 (79.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Lustre
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2019-20423?: CVE-2019-20423 is a high-severity vulnerability in Lustre, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2020-01-27.
How severe is CVE-2019-20423?: High severity. CVSS v3 base score is 7.5 out of 10.