CVE-2017-3733
Published: 4 May 2017
During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
Notes
| Author | Note |
|---|---|
| mdeslaur | only affects 1.1.x |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openssl Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
(1.0.1-4ubuntu5.39)
|
| trusty |
Not vulnerable
(1.0.1f-1ubuntu2.22)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(1.0.2g-1ubuntu4.6)
|
|
| yakkety |
Not vulnerable
(1.0.2g-1ubuntu9.1)
|
|
|
openssl098 Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Does not exist
(trusty was not-affected)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
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 | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |