PT-2020-10440 · Opensuse · Lustre

Published 2020-01-27 · Updated 2020-01-29 · CVE-2019-20427

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Description The issue is related to a buffer overflow and panic, and possibly remote code execution, in the ptlrpc module due to the lack of validation for specific fields of packets sent by a client. This occurs because of an interaction between req capsule get size and tgt brw write that leads to a tgt shortio2pages 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-2019-20427

Affected Products

Lustre

References · 10

• 🔥 https://jira.whamcloud.com/browse/LU-12600 · Exploit
• 🔥 https://review.whamcloud.com/#/c/35867 · Exploit
• http://wiki.lustre.org/Lustre_2.12.3_Changelog · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-20427 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-20427 · Security Note
• http://lustre.org · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20427 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-20427 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20427 · Security Note
• https://t.me/cvenotify/433 · Telegram Post