CVE-2018-17958: Buffer Overflow
First published: Wed Sep 26 2018(Updated: )
An integer overflow issue was found in the RTL8139 NIC emulation in QEMU. It could occur while receiving packets over the network if the size value is greater than INT_MAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process, resulting in DoS scenario.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/qemu-kvm-rhev | <10:2.12.0-33.el7 | 10:2.12.0-33.el7 |
| QEMU qemu | <=3.0.1 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Redhat Virtualization | =4.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Virtualization Manager | =4.3 | |
| All of | ||
| Redhat Virtualization | =4.0 | |
| Redhat Enterprise Linux | =7.0 | |
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u7 1:9.0.2+ds-2 1:9.1.0+ds-3 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2018-17958 https://nvd.nist.gov/vuln/detail/CVE-2018-17958
- https://bugzilla.redhat.com/show_bug.cgi?id=1636712
- https://access.redhat.com/errata/RHSA-2019:2425
- https://access.redhat.com/errata/RHSA-2019:2553
- https://access.redhat.com/security/cve/cve-2018-17958
- http://www.openwall.com/lists/oss-security/2018/10/08/1
- http://www.securityfocus.com/bid/105556
- https://lists.debian.org/debian-lts-announce/2019/01/msg00023.html
- https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03269.html
- https://seclists.org/bugtraq/2019/May/76
- https://usn.ubuntu.com/3826-1/
- https://www.debian.org/security/2019/dsa-4454
- https://launchpad.net/bugs/cve/CVE-2018-17958
- https://www.openwall.com/lists/oss-security/2018/10/08/1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1636729
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1636730
- https://git.qemu.org/?p=qemu.git;a=commit;h=1a326646fef38782e5542280040ec3ea23e4a730
- https://security-tracker.debian.org/tracker/CVE-2018-17958
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17958
- https://nvd.nist.gov/vuln/detail/CVE-2018-17958
- https://ubuntu.com/security/CVE-2018-17958
Frequently Asked Questions
What is CVE-2018-17958?
CVE-2018-17958 is a vulnerability in the RTL8139 NIC emulation in QEMU that could lead to a stack buffer overflow issue.
How severe is CVE-2018-17958?
CVE-2018-17958 has a severity rating of 7.5 (high).
What software versions are affected by CVE-2018-17958?
QEMU versions up to 3.0.1, QEMU-KVM-RHEV version 10:2.12.0-33.el7, and various versions of Ubuntu, Debian, Canonical Ubuntu Linux, Redhat Virtualization, and Redhat Virtualization Manager are affected by CVE-2018-17958.
How do I fix CVE-2018-17958 on Redhat?
To fix CVE-2018-17958 on Redhat, update the qemu-kvm-rhev package to version 10:2.12.0-33.el7 or later.
How can I mitigate CVE-2018-17958 on Ubuntu?
To mitigate CVE-2018-17958 on Ubuntu, update the qemu package to version 1:2.12+dfsg-3ubuntu9 or later.
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