PT-2020-10437 · Opensuse · Lustre

Published 2020-01-27 · Updated 2020-01-28 · CVE-2019-20423

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Lustre file system versions prior to 2.12.3

Description The issue arises from a buffer overflow and panic in the ptlrpc module due to the lack of validation for specific fields of packets sent by a client. This occurs because the function target handle connect() mishandles a certain size value when a client connects to a server, resulting from an integer signedness error.

Recommendations For versions prior to 2.12.3, update to version 2.12.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the ptlrpc module to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2019-20423

Affected Products

Lustre

References · 10

• 🔥 https://jira.whamcloud.com/browse/LU-12605 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-20423 · Vendor Advisory
• http://wiki.lustre.org/Lustre_2.12.3_Changelog · Vendor Advisory
• http://lustre.org · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20423 · Security Note
• https://cve.org/CVERecord?id=CVE-2019-20423 · Security Note
• https://osv.dev/vulnerability/CVE-2019-20423 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-20423 · Vendor Advisory
• https://t.me/cvenotify/429 · Telegram Post
• https://review.whamcloud.com/#/c/35935 · Note