CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2012-1101
https://notcve.org/view.php?id=CVE-2012-1101
systemd 37-1 does not properly handle non-existent services, which causes a denial of service (failure of login procedure). systemd versión 37-1, no maneja apropiadamente servicios no existentes, lo que causa una denegación de servicio (fallo del procedimiento de inicio de sesión). • http://www.openwall.com/lists/oss-security/2012/03/05/4 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=662029 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-1101 https://cgit.freedesktop.org/systemd/systemd/commit/?id=9a46fc3b9014de1bf0ed1f3004a536b08a19ebb3 •
CVSS: 7.8EPSS: 0%CPEs: 7EXPL: 0CVE-2020-1712 – systemd: use-after-free when asynchronous polkit queries are performed
https://notcve.org/view.php?id=CVE-2020-1712
A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages. Se detectó una vulnerabilidad uso de la memoria previamente liberada de la pila en systemd versiones anteriores a v245-rc1, donde se llevaron a cabo consultas de Polkit asincrónicas mientras se manejan mensajes dbus. Un atacante no privilegiado local puede abusar de este fallo para bloquear los servicios de systemd o potencialmente ejecutar código y elevar sus privilegios, mediante el envío de mensajes dbus especialmente diseñados. A heap use-after-free vulnerability was found in systemd, where asynchronous Polkit queries are performed while handling dbus messages. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html https://www.openwall.com/lists/oss-security/2020/02/05/1 https://access.redhat.c • CWE-416: Use After Free •
CVSS: 2.4EPSS: 0%CPEs: 9EXPL: 0CVE-2019-20386 – systemd: memory leak in button_open() in login/logind-button.c when udev events are received
https://notcve.org/view.php?id=CVE-2019-20386
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. Se detectó un problema en la función button_open en el archivo login/logind-button.c en systemd versiones anteriores a 243. Cuando se ejecuta el comando de activación udevadm, puede presentarse una pérdida de memoria. A memory leak was discovered in the systemd-login when a power-switch event is received. • http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00014.html https://github.com/systemd/systemd/commit/b2774a3ae692113e1f47a336a6c09bac9cfb49ad https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZPCOMW5X6IZZXASCDD2CNW2DLF3YADC https://security.netapp.com/advisory/ntap-20200210-0002 https://usn.ubuntu.com/4269-1 https://access.redhat.com/security/cve/CVE-2019-20386 https://bugzilla.redhat.com/show_bug.cgi?id=1793979 • CWE-400: Uncontrolled Resource Consumption CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 9.8EPSS: 0%CPEs: 2EXPL: 2CVE-2018-21029
https://notcve.org/view.php?id=CVE-2018-21029
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 is no hostname to be sent) ** EN DISPUTA ** systemd versiones 239 hasta la versión 245, acepta cualquier certificado firmado por parte de una autoridad de certificación de confianza para DNS Over TLS. La indicación de nombre de servidor (SNI) no se envía y no existe comprobación de nombre de host con el backend GnuTLS. NOTA: Esto ha sido discutido por el desarrollador como una vulnerabilidad, ya que la validación del hostname no tiene nada que ver con este problema (es decir, no hay ningún nombre de host que se envíe) • https://blog.cloudflare.com/dns-encryption-explained https://github.com/systemd/systemd/blob/v239/man/resolved.conf.xml#L199-L207 https://github.com/systemd/systemd/blob/v243/man/resolved.conf.xml#L196-L207 https://github.com/systemd/systemd/blob/v243/src/resolve/resolved-dnstls-gnutls.c#L62-L63 https://github.com/systemd/systemd/issues/9397 https://github.com/systemd/systemd/pull/13870 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NLJVOJMB6ANDI • CWE-295: Improper Certificate Validation •
CVSS: 7.8EPSS: 0%CPEs: 10EXPL: 1CVE-2019-3843 – systemd - DynamicUser can Create setuid Binaries when Assisted by Another Process
https://notcve.org/view.php?id=CVE-2019-3843
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled. Se descubrió que un servicio systemd que utiliza la propiedad DynamicUser puede crear un binario SUID/SGID que podría ejecutarse como servicio transitorio UID/GID incluso después de que el servicio haya terminado. Un atacante local puede utilizar esta vulnerabilidad para acceder a recursos que serán propiedad de un servicio potencialmente diferente en el futuro, cuando el UID/GID sea reciclado. It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. • https://www.exploit-db.com/exploits/46760 http://www.securityfocus.com/bid/108116 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3843 https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5JXQAKSTMABZ46EVCRMW62DHWYHTTFES https://security.netap • CWE-266: Incorrect Privilege Assignment CWE-269: Improper Privilege Management •