CVE-2020-10762
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Last Modified:
Insights vulnerability analysis
Description
An information-disclosure flaw was found in the way that gluster-block logs the output from gluster-block CLI operations. This includes recording passwords to the cmd_history.log file which is world-readable. This flaw allows local users to obtain sensitive information by reading the log file. The highest threat from this vulnerability is to data confidentiality.
Statement
The version of gluster-block shipped with Red Hat Gluster Storage 3 sets the world-readable permissions on gluster-block directory and log files that store the sensitive information, hence affected by this vulnerability.
Mitigation
Manually change the log files permission to remove readable bits for others, e.g;
# chmod 640 /var/log/glusterfs/gluster-block/cmd_history.log
NOTE: The above mitigation only restricts access to the other local users. To avoid storing passwords to the log file, kindly update gluster-block to the fixed version.
Additional information
- Bugzilla 1845067: gluster-block: information disclosure through world-readable gluster-block log files
- CWE-732->CWE-532: Incorrect Permission Assignment for Critical Resource leads to Insertion of Sensitive Information into Log File
- FAQ: Frequently asked questions about CVE-2020-10762
Common Vulnerability Scoring System (CVSS) Score Details
Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
| Red Hat | NVD | |
|---|---|---|
CVSS v3 Base Score | 5.5 | 5.5 |
Attack Vector | Local | Local |
Attack Complexity | Low | Low |
Privileges Required | Low | Low |
User Interaction | None | None |
Scope | Unchanged | Unchanged |
Confidentiality Impact | High | High |
Integrity Impact | None | None |
Availability Impact | None | None |
CVSS v3 Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Acknowledgements
This issue was discovered by Prasanna Kumar Kalever (Red Hat).
Frequently Asked Questions
Why is Red Hat's CVSS v3 score or Impact different from other vendors?
My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?
What can I do if my product is listed as "Will not fix"?
What can I do if my product is listed as "Fix deferred"?
What is a mitigation?
I have a Red Hat product but it is not in the above list, is it affected?
Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?
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