Vulnerability in GNU Gnutls
CVE-2018-10844
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.036 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- GNU Gnutls
- [Unknown] Gnutls
- Canonical Ubuntu Linux — versions 16.04, 18.04, 18.10
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 31, 32
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
References
- eprint.iacr.org/2018/747 (Third Party Advisory)
- gitlab.com/gnutls/gnutls/merge_requests/657 (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2018:3505 (vendor-advisory, Broken Link)
- www.securityfocus.com/bid/105138 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2018:3050 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3999-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2018-10844?
- CVE-2018-10844 is a medium-severity vulnerability in GNU Gnutls, classified under CWE-385. CVSS score: 5.9/10. Published 2018-08-22.
- How severe is CVE-2018-10844?
- Medium severity. CVSS v3 base score is 5.9 out of 10.