CVE-2018-1000001
First published: Fri Jan 12 2018(Updated: )
A buffer underflow in realpath() in glibc when getcwd() returns relative path or unreachable path (i.e. not starting with '/') was found that can allow privilege escalation under certain conditions. Reference: <a href="http://www.openwall.com/lists/oss-security/2018/01/11/5">http://www.openwall.com/lists/oss-security/2018/01/11/5</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU glibc | <=2.26 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =17.10 | |
| Redhat Virtualization Host | =4.0 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Server Aus | =7.6 | |
| Redhat Enterprise Linux Server Eus | =7.6 | |
| Redhat Enterprise Linux Server Tus | =7.6 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| debian/glibc | 2.31-13+deb11u11 2.31-13+deb11u10 2.36-9+deb12u8 2.36-9+deb12u7 2.40-3 |
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Reference Links
- http://seclists.org/oss-sec/2018/q1/38
- http://www.securityfocus.com/bid/102525
- http://www.securitytracker.com/id/1040162
- https://access.redhat.com/errata/RHSA-2018:0805
- https://security.netapp.com/advisory/ntap-20190404-0003/
- https://usn.ubuntu.com/3534-1/
- https://usn.ubuntu.com/3536-1/
- https://www.exploit-db.com/exploits/43775/
- https://www.exploit-db.com/exploits/44889/
- https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/
- http://www.openwall.com/lists/oss-security/2018/01/11/5
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533837
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533840
- https://lists.gluster.org/pipermail/gluster-users/2018-January/033293.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533836#c7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1542180
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533836#c12
- https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/7.4_release_notes/index#technology_previews_kernel
- https://access.redhat.com/security/cve/cve-2018-1000001
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533836#c14
- https://access.redhat.com/solutions/21101
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533836#c17
- https://bugzilla.redhat.com/show_bug.cgi?id=1533836
- https://launchpad.net/bugs/cve/CVE-2018-1000001
- https://www.openwall.com/lists/oss-security/2018/01/11/5
- https://sourceware.org/bugzilla/show_bug.cgi?id=22679
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=52a713fdd0a30e1bd79818e2e3c4ab44ddca1a94
- https://security-tracker.debian.org/tracker/CVE-2018-1000001
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000001
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000001
- https://ubuntu.com/security/CVE-2018-1000001
Frequently Asked Questions
What is CVE-2018-1000001?
CVE-2018-1000001 is a vulnerability in glibc 2.26 and earlier that allows for buffer underflow and potential code execution.
What is the severity of CVE-2018-1000001?
The severity of CVE-2018-1000001 is high, with a severity value of 7.8.
What software is affected by CVE-2018-1000001?
The software affected by CVE-2018-1000001 includes glibc versions 2.28-10+deb10u1, 2.28-10+deb10u2, 2.31-13+deb11u6, 2.31-13+deb11u7, 2.36-9+deb12u2, 2.36-9+deb12u3, and 2.37-12.
How can I fix CVE-2018-1000001?
To fix CVE-2018-1000001, update glibc to version 2.26 or later.
Where can I find more information about CVE-2018-1000001?
You can find more information about CVE-2018-1000001 at the following references: [Link 1](http://seclists.org/oss-sec/2018/q1/38), [Link 2](http://www.securityfocus.com/bid/102525), [Link 3](http://www.securitytracker.com/id/1040162).
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