Vulnerability Description
It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| 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 |
| Fedoraproject | Fedora | 31 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/105138Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3050Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3505Broken Link
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10844Issue TrackingPatchThird Party Advisory
- https://eprint.iacr.org/2018/747Third Party Advisory
- https://gitlab.com/gnutls/gnutls/merge_requests/657Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00022.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://usn.ubuntu.com/3999-1/Third Party Advisory
- http://www.securityfocus.com/bid/105138Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3050Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3505Broken Link
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10844Issue TrackingPatchThird Party Advisory
- https://eprint.iacr.org/2018/747Third Party Advisory
FAQ
What is CVE-2018-10844?
CVE-2018-10844 is a vulnerability with a CVSS score of 5.9 (MEDIUM). It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recove...
How severe is CVE-2018-10844?
CVE-2018-10844 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-10844?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Gnutls, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation, Canonical Ubuntu Linux.