Vulnerability Details : 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.
Products affected by CVE-2018-10844
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-10844
0.40%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-10844
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.2
|
3.6
|
Red Hat, Inc. | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2018-10844
-
The product uses a broken or risky cryptographic algorithm or protocol.Assigned by: nvd@nist.gov (Secondary)
-
Covert timing channels convey information by modulating some aspect of system behavior over time, so that the program receiving the information can observe system behavior and infer protected information.Assigned by: secalert@redhat.com (Primary)
References for CVE-2018-10844
-
http://www.securityfocus.com/bid/105138
GnuTLS Multiple Information Disclosure VulnerabilitiesThird Party Advisory;VDB Entry
-
https://access.redhat.com/errata/RHSA-2018:3505
RHSA-2018:3505 - Security Advisory - Red Hat Customer PortalBroken Link
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/
[SECURITY] Fedora 31 Update: mingw-gnutls-3.6.13-1.fc31 - package-announce - Fedora Mailing-Lists
-
https://usn.ubuntu.com/3999-1/
USN-3999-1: GnuTLS vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/
[SECURITY] Fedora 32 Update: mingw-gnutls-3.6.13-1.fc32 - package-announce - Fedora Mailing-Lists
-
https://gitlab.com/gnutls/gnutls/merge_requests/657
Address issues in record layer decoding (!657) · Merge Requests · gnutls / GnuTLS · GitLabIssue Tracking;Patch;Third Party Advisory
-
https://eprint.iacr.org/2018/747
Cryptology ePrint Archive: Report 2018/747 - Pseudo Constant Time Implementations of TLS Are Only Pseudo SecureThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10844
1582571 – (CVE-2018-10844) CVE-2018-10844 gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen attack due to not enough dummy function callsIssue Tracking;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/10/msg00022.html
[SECURITY] [DLA 1560-1] gnutls28 security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3050
RHSA-2018:3050 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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