CVE-2022-23218
Published: 14 January 2022
The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.
Notes
| Author | Note |
|---|---|
| mdeslaur | Ubuntu has stack protector enabled since 2006, so this issue is only a denial of service. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
xenial |
Does not exist
|
| bionic |
Does not exist
|
|
| focal |
Does not exist
|
|
| impish |
Does not exist
|
|
| upstream |
Needs triage
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Needed
|
|
|
glibc Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| upstream |
Needs triage
|
|
| bionic |
Released
(2.27-3ubuntu1.5)
|
|
| focal |
Released
(2.31-0ubuntu9.7)
|
|
| impish |
Released
(2.34-0ubuntu3.2)
|
|
| jammy |
Not vulnerable
(2.35-0ubuntu1)
|
|
| kinetic |
Not vulnerable
(2.35-0ubuntu1)
|
|
| lunar |
Not vulnerable
(2.35-0ubuntu1)
|
|
| xenial |
Released
(2.23-0ubuntu11.3+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f545ad4928fa1f27a3075265182b38a4f939a5f7 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |