CVE-2018-15859
Published: 25 August 2018
Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libxkbcommon Launchpad, Ubuntu, Debian |
bionic |
Released
(0.8.0-1ubuntu0.1)
|
| cosmic |
Not vulnerable
(0.8.2-1)
|
|
| trusty |
Released
(0.4.1-0ubuntu1.1)
|
|
| upstream |
Released
(0.8.2-1)
|
|
| xenial |
Released
(0.5.0-1ubuntu2.1)
|
|
|
Patches: vendor: https://github.com/xkbcommon/libxkbcommon/commit/bb4909d2d8fa6b08155e449986a478101e2b2634 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |