CVE-2018-10844
First published: Fri May 25 2018(Updated: )
It was found that GnuTLS implementation of HMAC-SHA-256 was vulnerable to Lucky thirteen style attack due to the fact that not enough dummy compression function calls are added to cater for every situation.
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 | |
| debian/gnutls28 | 3.7.1-5+deb11u5 3.7.1-5+deb11u6 3.7.9-2+deb12u3 3.8.8-2 |
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Reference Links
- https://eprint.iacr.org/2018/747
- http://www.securityfocus.com/bid/105138
- 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://access.redhat.com/errata/RHSA-2018:3050
- https://access.redhat.com/errata/RHSA-2018:3505
- https://usn.ubuntu.com/3999-1/
- https://lists.debian.org/debian-lts-announce/2018/10/msg00022.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10844
- https://gitlab.com/gnutls/gnutls/merge_requests/657
- https://launchpad.net/bugs/cve/CVE-2018-10844
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619510
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619512
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619513
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619511
- https://bugzilla.redhat.com/show_bug.cgi?id=1582571
- https://gitlab.com/gnutls/gnutls/issues/456
- https://gitlab.com/gnutls/gnutls/commit/29ffa2a1fa4cc396c5d1563a3e5cdca0174de28b
- https://gitlab.com/gnutls/gnutls/commit/c32a8690f9f9b05994078fe9d2e7a41b18da5b09
- https://gitlab.com/gnutls/gnutls/commit/c433cdf92349afae66c703bdacedf987f423605e
- https://gitlab.com/gnutls/gnutls/commit/c2e094acd68f7159025b2e2556d6fb4427b41dd7
- https://security-tracker.debian.org/tracker/CVE-2018-10844
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10844
- https://nvd.nist.gov/vuln/detail/CVE-2018-10844
- https://ubuntu.com/security/CVE-2018-10844
Frequently Asked Questions
What is CVE-2018-10844?
CVE-2018-10844 is a vulnerability in the GnuTLS implementation of HMAC-SHA-256 that is vulnerable to a Lucky thirteen style attack.
How severe is CVE-2018-10844?
CVE-2018-10844 has a severity rating of 5.9 (medium).
Which software is affected by CVE-2018-10844?
The GnuTLS package version 3.5.18-1ubuntu1.1 and earlier, and versions 3.5.19 to 3.6.3 on Ubuntu, and version 3.4.10-4ubuntu1.5 on Xenial, are affected by CVE-2018-10844.
How can I fix CVE-2018-10844?
To fix CVE-2018-10844, update the GnuTLS package to version 3.5.19 or later on Ubuntu, or version 3.4.10-4ubuntu1.6 on Xenial.
Where can I find more information about CVE-2018-10844?
You can find more information about CVE-2018-10844 in the following references: - [SecurityFocus](http://www.securityfocus.com/bid/105138) - [Red Hat Security Advisory RHSA-2018:3050](https://access.redhat.com/errata/RHSA-2018:3050) - [Red Hat Security Advisory RHSA-2018:3505](https://access.redhat.com/errata/RHSA-2018:3505)
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