vulnwire
5.9med

CVE-2018-10844

It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack.

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.9
v3.0 · CNA
CISA KEV
No
not known exploited
EPSS
3.6%
percentile 90%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

3.61% probability of exploitation in the next 30 days, higher than 90% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD3.15.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • [UNKNOWN] gnutls

Classification

Weakness
  • CWE-385 Covert Timing Channel
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm

References

  • eprint.iacr.org /2018/747 · x_refsource_MISC, x_transferred
  • gitlab.com /gnutls/gnutls/merge_requests/657 · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2018:3505 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • securityfocus.com /bid/105138 · vdb-entry, x_refsource_BID, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=CVE-2018-10844 · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2018:3050 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • lists.debian.org /debian-lts-announce/2018/10/msg00022.html · mailing-list, x_refsource_MLIST, x_transferred
  • usn.ubuntu.com /3999-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYF · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34 · vendor-advisory, x_refsource_FEDORA, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.