CVE-2023-4641
Published: 27 December 2023
A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.
Notes
| Author | Note |
|---|---|
Priority reason: Unlikely attack scenario |
|
| alexmurray | Technically this doesn't seem able to be exploitable in practice |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
shadow Launchpad, Ubuntu, Debian |
bionic |
Released
(1:4.5-1ubuntu2.5+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(1:4.8.1-1ubuntu5.20.04.5)
|
|
| jammy |
Released
(1:4.8.1-2ubuntu2.2)
|
|
| lunar |
Ignored
(end of life, was needed)
|
|
| mantic |
Released
(1:4.13+dfsg1-1ubuntu1.1)
|
|
| trusty |
Released
(1:4.1.5.1-1ubuntu9.5+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(1:4.13+dfsg1-2, 4.14.0)
|
|
| xenial |
Released
(1:4.2-3.1ubuntu5.5+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://github.com/shadow-maint/shadow/commit/65c88a43a23c2391dcc90c0abda3e839e9c57904 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |