CVE-2018-1122
First published: Mon May 07 2018(Updated: )
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 acieve privilege escalation by exploiting one of several vulnerabilities in the config_file() function.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Procps-ng Project Procps-ng | <3.3.15 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =17.10 | |
| Canonical Ubuntu Linux | =18.04 | |
| Debian Debian Linux | =7.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| redhat/procps-ng | <3.3.15 | 3.3.15 |
| debian/procps | 2:3.3.17-5 2:4.0.2-3 2:4.0.4-6 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2018-1122
- https://security-tracker.debian.org/tracker/CVE-2018-1123
- https://security-tracker.debian.org/tracker/CVE-2018-1124
- https://security-tracker.debian.org/tracker/CVE-2018-1125
- https://security-tracker.debian.org/tracker/CVE-2018-1126
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1122
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1123
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1124
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1125
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1126
- http://www.openwall.com/lists/oss-security/2018/05/17/1
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=899170
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00058.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00059.html
- http://seclists.org/oss-sec/2018/q2/122
- http://www.securityfocus.com/bid/104214
- https://access.redhat.com/errata/RHSA-2019:2189
- https://access.redhat.com/errata/RHSA-2020:0595
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1122
- https://lists.debian.org/debian-lts-announce/2018/05/msg00021.html
- https://security.gentoo.org/glsa/201805-14
- https://usn.ubuntu.com/3658-1/
- https://usn.ubuntu.com/3658-3/
- https://www.debian.org/security/2018/dsa-4208
- https://www.exploit-db.com/exploits/44806/
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt
- https://launchpad.net/bugs/cve/CVE-2018-1122
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1579639
- https://access.redhat.com/errata/RHSA-2020:1265
- https://access.redhat.com/errata/RHSA-2020:1464
- https://bugzilla.redhat.com/show_bug.cgi?id=1575466
- https://www.openwall.com/lists/oss-security/2018/05/17/1
- https://gitlab.com/procps-ng/procps/commit/b45c4803dd176f4e3f9d3d47421ddec9bbbe66cd
- https://nvd.nist.gov/vuln/detail/CVE-2018-1122
- https://ubuntu.com/security/CVE-2018-1122
Frequently Asked Questions
What is CVE-2018-1122?
CVE-2018-1122 is a vulnerability in procps-ng that allows for a local privilege escalation in top.
How does the CVE-2018-1122 vulnerability work?
The vulnerability occurs when top is run with HOME unset in an attacker-controlled directory, allowing the attacker to exploit vulnerabilities in the config_file() function and gain escalated privileges.
What is the severity of CVE-2018-1122?
CVE-2018-1122 has a severity rating of high (7 out of 10).
Which software versions are affected by CVE-2018-1122?
Versions of procps-ng before 3.3.15 and certain versions of procps on Red Hat, Debian, and Ubuntu are affected by CVE-2018-1122.
How can I fix CVE-2018-1122?
To fix CVE-2018-1122, upgrade to procps-ng version 3.3.15 or higher, or apply the appropriate remedy provided by your distribution.
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