Canonical Ubuntu Linux 21.10

Sensitive data could be exposed in world readable logs of cloud-init before version 22.3 when schema failures are reported. This leak could include hashed passwords.

Published: 2023-04-19T21:47:41.034Z
Updated: 2025-02-05T14:42:29.207Z

~/.config/apport/settings parsing is vulnerable to "billion laughs" attack

Published: 2024-06-04T21:38:44.324Z
Updated: 2025-03-13T18:21:18.146Z

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

Published: 2024-06-03T18:48:02.281Z
Updated: 2025-03-27T19:31:12.082Z

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

Published: 2022-03-29T15:05:13.000Z
Updated: 2024-08-02T23:47:43.302Z

snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary AppArmor policy rules via malformed content interface and layout declarations and hence escape strict snap confinement. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Published: 2022-02-17T22:15:21.000Z
Updated: 2024-08-03T17:16:04.197Z

There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned

Published: 2022-02-21T00:00:00.000Z
Updated: 2024-08-03T17:16:04.361Z

A flaw was found in the KVM's AMD code for supporting the Secure Encrypted Virtualization-Encrypted State (SEV-ES). A KVM guest using SEV-ES can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT for a string I/O instruction (for example, outs or ins) using the exit reason SVM_EXIT_IOIO. This issue results in a crash of the entire system or a potential guest-to-host escape scenario.

Published: 2022-02-18T17:50:37.000Z
Updated: 2024-08-03T17:16:03.525Z

A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.

Published: 2022-01-28T00:00:00.000Z
Updated: 2025-10-21T23:15:48.549Z

AIDE before 0.17.4 allows local users to obtain root privileges via crafted file metadata (such as XFS extended attributes or tmpfs ACLs), because of a heap-based buffer overflow.

Published: 2022-01-20T00:00:00.000Z
Updated: 2024-08-04T04:39:20.711Z

In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.

Published: 2022-01-31T07:15:52.000Z
Updated: 2024-08-04T04:32:13.673Z

A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Published: 2022-02-17T00:00:00.000Z
Updated: 2024-08-04T04:32:12.887Z

snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Published: 2022-02-17T22:15:18.000Z
Updated: 2024-08-04T04:32:12.268Z

In Django 2.2 before 2.2.25, 3.1 before 3.1.14, and 3.2 before 3.2.10, HTTP requests for URLs with trailing newlines could bypass upstream access control based on URL paths.

Published: 2021-12-07T22:55:40.000Z
Updated: 2024-08-04T04:17:25.193Z

The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.

Published: 2022-02-21T14:30:12.659Z
Updated: 2025-04-23T19:02:19.767Z

A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

Published: 2022-08-23T00:00:00.000Z
Updated: 2024-08-03T17:09:09.828Z

Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.

Published: 2021-11-17T03:15:10.949Z
Updated: 2024-09-16T18:02:58.362Z

A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.

Published: 2022-08-23T00:00:00.000Z
Updated: 2024-08-03T17:09:09.615Z

There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an attacker to execute arbitrary code as root.

Published: 2024-06-03T18:40:32.847Z
Updated: 2024-08-19T14:10:41.358Z

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

Published: 2022-03-23T19:46:40.000Z
Updated: 2024-08-03T17:09:08.293Z

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.

Published: 2022-03-03T22:04:15.000Z
Updated: 2024-08-03T17:01:07.744Z

snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Published: 2022-02-17T22:15:16.000Z
Updated: 2024-08-03T16:45:51.372Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg-hwe-18.04 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:41.851Z
Updated: 2024-09-16T20:47:23.455Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:41.158Z
Updated: 2024-09-16T23:20:32.516Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-17 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:40.514Z
Updated: 2024-09-16T22:51:04.819Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-16 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:39.859Z
Updated: 2024-09-17T02:37:33.692Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-15 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:39.210Z
Updated: 2024-09-16T20:21:31.720Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-14 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:38.559Z
Updated: 2024-09-16T23:22:01.152Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-13 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:37.848Z
Updated: 2024-09-16T23:11:32.731Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-8 package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:37.135Z
Updated: 2024-09-16T18:29:09.540Z

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-lts package apport hooks, it could expose private data to other local users.

Published: 2021-06-12T03:40:36.400Z
Updated: 2024-09-17T03:18:22.707Z

Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.

Published: 2022-02-18T00:00:00.000Z
Updated: 2024-08-04T15:40:36.640Z

A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.

Published: 2022-02-18T00:00:00.000Z
Updated: 2024-08-04T15:40:36.654Z

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.

Published: 2022-02-18T00:00:00.000Z
Updated: 2024-08-04T15:40:36.637Z

A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required.

Published: 2022-02-18T00:00:00.000Z
Updated: 2024-08-05T23:17:50.581Z