Bug 1557366 (CVE-2018-1086)
| Summary: | CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information disclosure | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Cedric Buissart <cbuissar> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | anprice, apevec, cfeist, chrisw, cluster-maint, idevat, jaruga, jjoyce, jpokorny, jschluet, kbasil, lhh, lpeer, markmc, mburns, omular, rbryant, sclewis, security-response-team, sisharma, slinaber, ssaha, tdecacqu, tojeline, vbellur |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | pcs 0.9.164, pcs 0.10 | Doc Type: | If docs needed, set a value |
| Doc Text: |
It was found that the REST interface of the pcsd service did not properly remove the pcs debug argument from the /run_pcs query, possibly disclosing sensitive information. A remote attacker with a valid token could use this flaw to elevate their privilege.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-10 10:17:54 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1557252, 1557253, 1557962, 1565090, 1565091 | ||
| Bug Blocks: | 1550244 | ||
Acknowledgments: Name: Cedric Buissart (Red Hat) Created pcs tracking bugs for this issue: Affects: fedora-all [bug 1565090] This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2018:1060 https://access.redhat.com/errata/RHSA-2018:1060 This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2018:1927 https://access.redhat.com/errata/RHSA-2018:1927 |
To prevent some information disclosure, pcsd actively removes '--debug' from command requested over the REST interface, but this can be bypassed: ----8<--- 235 # do not reveal potentialy sensitive information 236 command_decoded.delete('--debug') ---->8---- The information gained could then be used to gain higher privileges.