CVE-2018-16869
Published: 3 December 2018
A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.
Notes
| Author | Note |
|---|---|
| mdeslaur | nettle changes are too intrusive to backport to stable releases |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
nettle Launchpad, Ubuntu, Debian |
jammy |
Not vulnerable
(3.4.1~rc1-1)
|
| bionic |
Released
(3.4.1-0ubuntu0.18.04.1)
|
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Not vulnerable
(3.4.1~rc1-1)
|
|
| eoan |
Not vulnerable
(3.4.1~rc1-1)
|
|
| focal |
Not vulnerable
(3.4.1~rc1-1)
|
|
| groovy |
Not vulnerable
(3.4.1~rc1-1)
|
|
| hirsute |
Not vulnerable
(3.4.1~rc1-1)
|
|
| impish |
Not vulnerable
(3.4.1~rc1-1)
|
|
| kinetic |
Not vulnerable
(3.4.1~rc1-1)
|
|
| trusty |
Ignored
(change too intrusive)
|
|
| upstream |
Released
(3.4.1~rc1-1)
|
|
| xenial |
Ignored
(change too intrusive)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.7 |
| Attack vector | Physical |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N |