CVE-2018-1000520
Published: 26 June 2018
ARM mbedTLS version 2.7.0 and earlier contains a Ciphersuite Allows Incorrectly Signed Certificates vulnerability in mbedtls_ssl_get_verify_result() that can result in ECDSA-signed certificates are accepted, when only RSA-signed ones should be.. This attack appear to be exploitable via Peers negotiate a TLS-ECDH-RSA-* ciphersuite. Any of the peers can then provide an ECDSA-signed certificate, when only an RSA-signed one should be accepted..
Priority
Status
Package | Release | Status |
---|---|---|
mbedtls Launchpad, Ubuntu, Debian |
xenial |
Needed
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Ignored
(end of life)
|
|
jammy |
Needed
|
|
kinetic |
Ignored
(end of life, was needed)
|
|
artful |
Ignored
(end of life)
|
|
bionic |
Needed
|
|
cosmic |
Ignored
(end of life)
|
|
disco |
Ignored
(end of life)
|
|
eoan |
Ignored
(end of life)
|
|
focal |
Needed
|
|
impish |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Needed
|
|
mantic |
Needed
|
|
lunar |
Ignored
(end of life, was needed)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |