CVE-2019-18222
Published: 23 January 2020
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
mbedtls Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| eoan |
Ignored
(reached end-of-life)
|
|
| focal |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| groovy |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| hirsute |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| impish |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| jammy |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| kinetic |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| lunar |
Not vulnerable
(2.16.4-1ubuntu2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(2.16.4-1)
|
|
| xenial |
Needs triage
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.7 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |