Summary
Muqing Liu and neoni discovered that Apport incorrectly handled detecting
if an executable was replaced after a crash. A local attacker could
possibly use this issue to execute arbitrary code as the root user.
(CVE-2021-3899)
Gerrit Venema discovered that Apport incorrectly handled connections to
Apport sockets inside containers. A local attacker could possibly use this
issue to connect to arbitrary sockets as the root user. (CVE-2022-1242)
Gerrit Venema discovered that Apport incorrectly handled user settings
files. A local attacker could possibly use this issue to cause Apport to
consume resources, leading to a denial of service. (CVE-2022-28652)
Gerrit Venema discovered that Apport did not limit the amount of logging
from D-Bus connections. A local attacker could possibly use this issue to
fill up the Apport log file, leading to denial of service. (CVE-2022-28654)
Gerrit Venema discovered that Apport did not filter D-Bus connection
strings. A local attacker could possibly use this issue to cause Apport to
make arbitrary network connections. (CVE-2022-28655)
Gerrit Venema discovered that Apport did not limit the amount of memory
being consumed during D-Bus connections. A local attacker could possibly
use this issue to cause Apport to consume memory, leading to a denial of
service. (CVE-2022-28656)
Gerrit Venema discovered that Apport did not disable the python crash
handler before chrooting into a container. A local attacker could possibly
use this issue to execute arbitrary code. (CVE-2022-28657)
Gerrit Venema discovered that Apport incorrectly handled filename argument
whitespace. A local attacker could possibly use this issue to spoof
arguments to the Apport daemon. (CVE-2022-28658)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | apport | 2.20.9-0ubuntu7.28 |
| Ubuntu · 20.04 LTS 20.04:LTS | apport | 2.20.11-0ubuntu27.24 |
| Ubuntu · 22.04 LTS 22.04:LTS | apport | 2.20.11-0ubuntu82.1 |
Vulnerabilities 8
-
High 7.8CVE-2021-3899 Public exploit
There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an a…
-
High 7.8
Apport can be tricked into connecting to arbitrary sockets as the root user
-
High 7.8
Apport does not disable python crash handler before entering chroot
-
High 7.1
is_closing_session() allows users to create arbitrary tcp dbus connections
-
Medium 5.5
~/.config/apport/settings parsing is vulnerable to "billion laughs" attack
-
Medium 5.5
is_closing_session() allows users to fill up apport.log
-
Medium 5.5
is_closing_session() allows users to consume RAM in the Apport process
-
Medium 5.5
Apport argument parsing mishandles filename splitting on older kernels resulting in argument spoofing
References
-
report
https://ubuntu.com/security/CVE-2021-3899
-
report
https://ubuntu.com/security/CVE-2022-1242
-
report
https://ubuntu.com/security/CVE-2022-28652
-
report
https://ubuntu.com/security/CVE-2022-28654
-
report
https://ubuntu.com/security/CVE-2022-28655
-
report
https://ubuntu.com/security/CVE-2022-28656
-
report
https://ubuntu.com/security/CVE-2022-28657
-
report
https://ubuntu.com/security/CVE-2022-28658