CVE-2018-10844
Published: 22 August 2018
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | RHEL7 update brings back SHA256 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
gnutls28 Launchpad, Ubuntu, Debian |
disco |
Not vulnerable
(3.6.5-2ubuntu1)
|
| eoan |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| focal |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| hirsute |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| jammy |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| kinetic |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| lunar |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| bionic |
Released
(3.5.18-1ubuntu1.1)
|
|
| cosmic |
Not vulnerable
(3.6.4-2ubuntu1)
|
|
| groovy |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| impish |
Not vulnerable
(3.6.5-2ubuntu1)
|
|
| trusty |
Does not exist
(trusty was needed)
|
|
| upstream |
Released
(3.5.19,3.6.3)
|
|
| xenial |
Released
(3.4.10-4ubuntu1.5)
|
|
|
Patches: upstream: https://gitlab.com/gnutls/gnutls/merge_requests/657 upstream: https://gitlab.com/gnutls/gnutls/commit/e14d85eb8b1987d86f7b1d101a0e7795675d20d4 (3.5) upstream: https://gitlab.com/gnutls/gnutls/commit/c2e094acd68f7159025b2e2556d6fb4427b41dd7 (3.5) upstream: https://gitlab.com/gnutls/gnutls/commit/62a39773e9d0c4a686a3d8d2b6cca32f82c26cd7 (3.5) upstream: https://gitlab.com/gnutls/gnutls/commit/c433cdf92349afae66c703bdacedf987f423605e (3.5) upstream: https://gitlab.com/gnutls/gnutls/commit/9fdd24d53c84cc68dac1be28f8b1436e424ce1f1 (3.5) |
||
|
gnutls26 Launchpad, Ubuntu, Debian |
hirsute |
Does not exist
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| impish |
Does not exist
|
|
| trusty |
Needed
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |