CVE-2019-20427

Public Exploit

Description

In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic, and possibly remote code execution, due to the lack of validation for specific fields of packets sent by a client. Interaction between req_capsule_get_size and tgt_brw_write leads to a tgt_shortio2pages integer signedness error.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.52% Top 15%
Vendor Advisory lustre.org Vendor Advisory lustre.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://wiki.lustre.org/Lustre_2.12.3_Changelog release notes vendor advisory
http://lustre.org/ product vendor advisory
https://jira.whamcloud.com/browse/LU-12600 third party advisory issue tracking exploit
https://review.whamcloud.com/#/c/35867/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-20427?
CVE-2019-20427 has been scored as a critical severity vulnerability.
How to fix CVE-2019-20427?
To fix CVE-2019-20427, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-20427 being actively exploited in the wild?
It is possible that CVE-2019-20427 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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