Debian Systemd vulnerabilities

CVE-2019-3844 [HIGH] CVE-2019-3844: systemd - It was discovered that a systemd service that uses DynamicUser property can get ... It was discovered that a systemd service that uses DynamicUser property can get new privileges through the execution of SUID binaries, which would allow to create binaries owned by the service transient group with the setgid bit set. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the GID

CVE-2019-3842 [HIGH] CVE-2019-3842: systemd - In systemd before v242-rc4, it was discovered that pam_systemd does not properly... In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

CVE-2019-6454 [MEDIUM] CVE-2019-6454: systemd - An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsys... An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages

CVE-2019-15718 [MEDIUM] CVE-2019-15718: systemd - In systemd 240, bus_open_system_watch_bind_with_description in shared/bus-util.c... In systemd 240, bus_open_system_watch_bind_with_description in shared/bus-util.c (as used by systemd-resolved to connect to the system D-Bus instance), calls sd_bus_set_trusted, which disables access controls for incoming D-Bus messages. An unprivileged user can exploit this by executing D-Bus methods that should be restricted to privileged users, in order to chan

CVE-2019-3815 [HIGH] CVE-2019-3815: systemd - A memory leak was discovered in the backport of fixes for CVE-2018-16864 in Red ... A memory leak was discovered in the backport of fixes for CVE-2018-16864 in Red Hat Enterprise Linux. Function dispatch_message_real() in journald-server.c does not free the memory allocated by set_iovec_field_free() to store the `_CMDLINE=` entry. A local attacker may use this flaw to make systemd-journald crash. This issue only affects versions shipped with Red Hat

CVE-2019-20386 [LOW] CVE-2019-20386: systemd - An issue was discovered in button_open in login/logind-button.c in systemd befor... An issue was discovered in button_open in login/logind-button.c in systemd before 243. When executing the udevadm trigger command, a memory leak may occur. Scope: local bookworm: resolved (fixed in 243-5) bullseye: resolved (fixed in 243-5) forky: resolved (fixed in 243-5) sid: resolved (fixed in 243-5) trixie: resolved (fixed in 243-5)

CVE-2018-16865 [HIGH] CVE-2018-16865: systemd - An allocation of memory without limits, that could result in the stack clashing ... An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when many entries are sent to the journal socket. A local attacker, or a remote one if systemd-journal-remote is used, may use this flaw to crash systemd-journald or execute code with journald privileges. Versions through v24

CVE-2018-15686 [HIGH] CVE-2018-15686: systemd - A vulnerability in unit_deserialize of systemd allows an attacker to supply arbi... A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected releases are systemd versions up to and including 239. Scope: local bookworm: resolved (fixed in 239-12) bullseye:

CVE-2018-15688 [HIGH] CVE-2018-15688: network-manager - A buffer overflow vulnerability in the dhcp6 client of systemd allows a maliciou... A buffer overflow vulnerability in the dhcp6 client of systemd allows a malicious dhcp6 server to overwrite heap memory in systemd-networkd. Affected releases are systemd: versions up to and including 239. Scope: local bookworm: resolved (fixed in 1.14.4-2) bullseye: resolved (fixed in 1.14.4-2) forky: resolved (fixed in 1.14.4-2) sid: resolved (fixed in 1.1

CVE-2018-15687 [HIGH] CVE-2018-15687: systemd - A race condition in chown_one() of systemd allows an attacker to cause systemd t... A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239. Scope: local bookworm: resolved (fixed in 239-11) bullseye: resolved (fixed in 239-11) forky: resolved (fixed in 239-11) sid: resolved (fixed in 239-11) trixie: resolved (fixed

CVE-2018-16864 [HIGH] CVE-2018-16864: systemd - An allocation of memory without limits, that could result in the stack clashing ... An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when a program with long command line arguments calls syslog. A local attacker may use this flaw to crash systemd-journald or escalate his privileges. Versions through v240 are vulnerable. Scope: local bookworm: resolved (fix

CVE-2018-1049 [MEDIUM] CVE-2018-1049: systemd - In systemd prior to 234 a race condition exists between .mount and .automount un... In systemd prior to 234 a race condition exists between .mount and .automount units such that automount requests from kernel may not be serviced by systemd resulting in kernel holding the mountpoint and any processes that try to use said mount will hang. A race condition like this may lead to denial of service, until mount points are unmounted. Scope: local bookworm

CVE-2018-21029 [CRITICAL] CVE-2018-21029: systemd - systemd 239 through 245 accepts any certificate signed by a trusted certificate ... systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication (SNI) is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since hostname validation does not have anything to do with this issue (i.e. there i

CVE-2018-6954 [HIGH] CVE-2018-6954: systemd - systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-termi... systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on. Scope: l

CVE-2018-16888 [MEDIUM] CVE-2018-16888: systemd - It was discovered systemd does not correctly check the content of PIDFile files ... It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged p

CVE-2018-16866 [LOW] CVE-2018-16866: systemd - An out of bounds read was discovered in systemd-journald in the way it parses lo... An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable. Scope: local bookworm: resolved (fixed in 240-1) bullseye: resolved (fixed in 240-1) forky: resolved (fixed in 240-1) sid: resolved (f

CVE-2017-15908 [HIGH] CVE-2017-15908: systemd - In systemd 223 through 235, a remote DNS server can respond with a custom crafte... In systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in the dns_packet_read_type_window() function of the 'systemd-resolved' service and cause a DoS of the affected service. Scope: local bookworm: resolved (fixed in 235-3) bullseye: resolved (fixed in 235-3) forky: resolved (fixed in 2

CVE-2017-9445 [HIGH] CVE-2017-9445: systemd - In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolv... In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it. Scope: local b

CVE-2017-9217 [HIGH] CVE-2017-9217: systemd - systemd-resolved through 233 allows remote attackers to cause a denial of servic... systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty question section. Scope: local bookworm: resolved (fixed in 232-24) bullseye: resolved (fixed in 232-24) forky: resolved (fixed in 232-24) sid: resolved (fixed in 232-24) trixie: resolved (fixed in 232-24)

CVE-2017-18078 [HIGH] CVE-2017-18078: systemd - systemd-tmpfiles in systemd before 237 attempts to support ownership/permission ... systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/pa