CVE-2021-33910
Published: 20 July 2021
basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
systemd Launchpad, Ubuntu, Debian |
bionic |
Released
(237-3ubuntu10.49)
|
| focal |
Released
(245.4-4ubuntu3.10)
|
|
| groovy |
Released
(246.6-1ubuntu1.7)
|
|
| hirsute |
Released
(247.3-3ubuntu3.4)
|
|
| impish |
Released
(248.3-1ubuntu3)
|
|
| jammy |
Released
(248.3-1ubuntu3)
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(229-4ubuntu21.31+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://github.com/systemd/systemd/pull/20256 |
||
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |