Bug 1575466 (CVE-2018-1122)
| Summary: | CVE-2018-1122 procps-ng, procps: Local privilege escalation in top | ||
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| Product: | [Other] Security Response | Reporter: | Doran Moppert <dmoppert> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | albert, dmoppert, jaromir.capik, jrybar, kdudka, security-response-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | procps-ng 3.3.15 | Doc Type: | If docs needed, set a value |
| Doc Text: |
If the HOME environment variable is unset or empty, top will read its configuration file from the current working directory without any security check. If a user runs top with HOME unset in an attacker-controlled directory, the attacker could achieve privilege escalation by exploiting one of several vulnerabilities in the config_file() function.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-10 10:21:20 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: | 1577023, 1577024, 1579639, 1579640, 1802798, 1802799, 1805210 | ||
| Bug Blocks: | 1575455 | ||
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Description
Doran Moppert
2018-05-07 02:01:52 UTC
Acknowledgments: Name: Qualys Research Labs Public via: http://seclists.org/oss-sec/2018/q2/122 External References: https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt Created procps-ng tracking bugs for this issue: Affects: fedora-all [bug 1579639] CVSSv3 scoring has been reviewed. Changed the AC (Attack Complexity) metric from Low to High, as exploiting this flaw relies on the target user running `top` with an unset or empty `HOME` environment variable and in a directory controlled by the attacker. This is unusual, and certainly beyond the attacker's control. Note that our score differs from NVD in one respect: User Interaction: None (NVD) vs Required (Red Hat). Exploitation requires the target user to run `top` in an attacker-controlled directory. `top` is an interactive tool: while it does support a batch mode that might be used from a script, the extra conditions for exploitation are extremely unlikely to be met by a script that is run unattended. We regard plausible attack scenarios using this flaw to target a user that is interactively running `top`. This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2019:2189 https://access.redhat.com/errata/RHSA-2019:2189 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Red Hat Enterprise Linux 7.4 Telco Extended Update Support Via RHSA-2020:0595 https://access.redhat.com/errata/RHSA-2020:0595 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.5 Extended Update Support Via RHSA-2020:1265 https://access.redhat.com/errata/RHSA-2020:1265 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2020:1464 https://access.redhat.com/errata/RHSA-2020:1464 |