CVE-2018-10846
First published: Fri May 25 2018(Updated: )
A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Gnu Gnutls | <3.6.12 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Canonical Ubuntu Linux | =19.04 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| Debian Debian Linux | =8.0 | |
| ubuntu/gnutls28 | <3.5.18-1ubuntu1.1 | 3.5.18-1ubuntu1.1 |
| ubuntu/gnutls28 | <3.5.19<3.6.3 | 3.5.19 3.6.3 |
| ubuntu/gnutls28 | <3.4.10-4ubuntu1.5 | 3.4.10-4ubuntu1.5 |
| debian/gnutls28 | 3.6.7-4+deb10u8 3.6.7-4+deb10u12 3.7.1-5+deb11u4 3.7.1-5+deb11u3 3.7.9-2+deb12u2 3.8.5-2 |
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Reference Links
- http://www.securityfocus.com/bid/105138
- https://access.redhat.com/errata/RHSA-2018:3050
- https://access.redhat.com/errata/RHSA-2018:3505
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10846
- https://eprint.iacr.org/2018/747
- https://gitlab.com/gnutls/gnutls/merge_requests/657
- https://lists.debian.org/debian-lts-announce/2018/10/msg00022.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/
- https://usn.ubuntu.com/3999-1/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619522
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619524
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619525
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619523
- https://bugzilla.redhat.com/show_bug.cgi?id=1582574
- https://launchpad.net/bugs/cve/CVE-2018-10846
- https://gitlab.com/gnutls/gnutls/commit/ce671a6db9e47006cff152d485091141b1569f39
- https://gitlab.com/gnutls/gnutls/merge_requests/663
- https://security-tracker.debian.org/tracker/CVE-2018-10846
- https://ubuntu.com/security/notices/USN-3999-1
- https://www.cve.org/CVERecord?id=CVE-2018-10846
- https://nvd.nist.gov/vuln/detail/CVE-2018-10846
- https://ubuntu.com/security/CVE-2018-10846
Frequently Asked Questions
What is CVE-2018-10846?
CVE-2018-10846 is a cache-based side channel vulnerability in the GnuTLS implementation that allows an attacker to recover plain text in a cross-VM attack setting.
How severe is CVE-2018-10846?
The severity of CVE-2018-10846 is medium, with a CVSS score of 5.6.
Which software versions are affected by CVE-2018-10846?
The affected software includes GnuTLS version up to and excluding 3.5.18-1ubuntu1.1, 3.5.19 and 3.6.3 (Ubuntu), 3.4.10-4ubuntu1.5 (Xenial), 3.6.7-4+deb10u8, 3.6.7-4+deb10u10, 3.7.1-5+deb11u3, 3.7.9-2, 3.8.1-4 (Debian), as well as other specific versions and distributions.
How can I fix CVE-2018-10846?
To fix CVE-2018-10846, you should update GnuTLS to version 3.5.18-1ubuntu1.1 (Ubuntu), 3.5.19 or 3.6.3 (Ubuntu), 3.4.10-4ubuntu1.5 (Xenial), or other specific fixed versions for different distributions.
Where can I find more information about CVE-2018-10846?
You can find more information about CVE-2018-10846 on the SecurityFocus and Red Hat websites.
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