Subiquity Shows Guided Storage Passphrase in Plaintext with Read-all Permissions

When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegate=yes - as a result systemd will move processes from the containers created and managed by these snaps into the cgroup of the main daemon within the snap itself when reloading system units. This may grant additional privileges to a container within the snap that were not originally intended.

An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.

An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.

It was discovered that Canonical's Pebble service manager read-file API and the associated pebble pull command, before v1.10.2, allowed unprivileged local users to read files with root-equivalent permissions when Pebble was running as root. Fixes are also available as backports to v1.1.1, v1.4.2, and v1.7.4.

Accountsservice incorrectly drops privileges

accountsservice no longer drops permissions when writting .pam_environment

DDoS in Ubuntu package linux-bluefield

Running DDoS on tcp port 22 will trigger a kernel crash. This issue is introduced by the backport of a commit regarding nft_lookup without the subsequent fixes that were introduced after this commit. The resolution of this CVE introduces those commits to the linux-bluefield package.

gnome-control-center: Remote login misconfiguration in GNOME Control Center

In Ubuntu, gnome-control-center did not properly reflect SSH remote login status when the system was configured to use systemd socket activation for openssh-server. This could unknowingly leave the local machine exposed to remote SSH access contrary to expectation of the user.

Improper Permission Management in SSH Session Handling

A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.

unzip: free() called for uninitialized or already freed pointer

The NEEDBITS macro in the inflate_dynamic function in inflate.c for unzip can be invoked using invalid buffers, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors that trigger a free of uninitialized or previously-freed data.

Apport can be tricked into connecting to arbitrary sockets as the root user

audiofile: NULL pointer dereference in ModuleState::setup() in modules/ModuleState.cpp allows for denial of service via crafted file

The audiofile Audio File Library 0.3.6 has a NULL pointer dereference bug in ModuleState::setup in modules/ModuleState.cpp, which allows an attacker to cause a denial of service via a crafted caf file, as demonstrated by sfconvert.

audiofile: Heap-based buffer overflow in Expand3To4Module::run() when running sfconvert

An issue has been discovered in mpruett Audio File Library (aka audiofile) 0.3.6, 0.3.5, 0.3.4, 0.3.3, 0.3.2, 0.3.1, 0.3.0. A heap-based buffer overflow in Expand3To4Module::run has occurred when running sfconvert.

audiofile: Buffer overflow when changing number of channels and sample format

Buffer overflow in the afReadFrames function in audiofile (aka libaudiofile and Audio File Library) allows user-assisted remote attackers to cause a denial of service (program crash) or possibly execute arbitrary code via a crafted audio file, as demonstrated by sixteen-stereo-to-eight-mono.c.

MileSight DeviceHub - CWE-320: Key Management Errors

MileSight DeviceHub - CWE-320: Key Management Errors may allow Authentication Bypass and Man-In-The-Middle Traffic

ImageMagick: division by zero in RemoveDuplicateLayers in MagickCore/layer.c

ImageMagick 7.0.1-0 to 7.0.8-54 Q16 allows Division by Zero in RemoveDuplicateLayers in MagickCore/layer.c.

zziplib: out of bound read in mmapped.c:zzip_disk_fread() causes crash

An issue was discovered in ZZIPlib 0.13.68. An invalid memory address dereference was discovered in zzip_disk_fread in mmapped.c. The vulnerability causes an application crash, which leads to denial of service.

zziplib: Bus error in zip.c:__zzip_parse_root_directory() cause crash via crafted zip file

An issue was discovered in ZZIPlib 0.13.68. There is a bus error caused by the __zzip_parse_root_directory function of zip.c. Attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.

zziplib: Loading of misaligned memory address in zip.c:__zzip_fetch_disk_trailer can lead to a denial of service via crafted zip file

In ZZIPlib 0.13.67, there is a memory alignment error and bus error in the __zzip_fetch_disk_trailer function of zzip/zip.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.

zziplib: Invalid memory access in the zzip_disk_fread function in zzip/mmapped.c

In ZZIPlib 0.13.67, 0.13.66, 0.13.65, 0.13.64, 0.13.63, 0.13.62, 0.13.61, 0.13.60, 0.13.59, 0.13.58, 0.13.57 and 0.13.56 there is a segmentation fault caused by invalid memory access in the zzip_disk_fread function (zzip/mmapped.c) because the size variable is not validated against the amount of file->stored data.