CVE-2016-6866
Published: 15 February 2017
slock allows attackers to bypass the screen lock via vectors involving an invalid password hash, which triggers a NULL pointer dereference and crash.
From the Ubuntu Security Team
It was discovered that slock incorrectly handled password hashes. An attacker could possibly use this issue to cause a denial of service.
Notes
| Author | Note |
|---|---|
| ratliff | for xenial and yakkety, the user must both disable pam and enable slock to be vulnerable |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
suckless-tools Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
| bionic |
Not vulnerable
(42-1)
|
|
| cosmic |
Not vulnerable
(42-1)
|
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Released
(40-1+deb8u2build0.14.04.1)
|
|
| upstream |
Released
(40-1+deb8u2, 41-1)
|
|
| xenial |
Not vulnerable
(42-1)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Ignored
(end of life)
|
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 |