CVSS: 7.1EPSS: 0%CPEs: 12EXPL: 1CVE-2020-8648 – kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c
https://notcve.org/view.php?id=CVE-2020-8648
There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c. Se presenta una vulnerabilidad de uso de la memoria previamente liberada en el kernel de Linux versiones hasta 5.5.2, en la función n_tty_receive_buf_common en el archivo drivers/tty/n_tty.c. A use-after-free flaw was found in the Linux kernel console driver when using the copy-paste buffer. This flaw allows a local user to crash the system. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html https://bugzilla.kernel.org/show_bug.cgi?id=206361 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://security.netapp.com/advisory/ntap-20200924-0004 https://usn.ubuntu.com/4342-1 https://usn.ubuntu.com/4344-1 https://usn.ubuntu.com/4345-1 • CWE-416: Use After Free •
CVSS: 5.9EPSS: 0%CPEs: 4EXPL: 1CVE-2020-8649 – kernel: invalid read location in vgacon_invert_region function in drivers/video/console/vgacon.c
https://notcve.org/view.php?id=CVE-2020-8649
There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region function in drivers/video/console/vgacon.c. Se presenta una vulnerabilidad de uso de la memoria previamente liberada en el kernel de Linux versiones hasta 5.5.2, en la función vgacon_invert_region en el archivo drivers/video/console/vgacon.c. A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console. An out-of-bounds read can occur, leaking information to the console. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html https://bugzilla.kernel.org/show_bug.cgi?id=206357 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://www.debian.org/security/2020/dsa-4698 https://access.redhat.com/security/cve/CVE-2020-8649 https://bugzilla.redhat.com/show_bug.cgi?id=1802555 • CWE-416: Use After Free •
CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0CVE-2020-5208 – remote code execution vulnerability in ipmitool
https://notcve.org/view.php?id=CVE-2020-5208
It's been found that multiple functions in ipmitool before 1.8.19 neglect proper checking of the data received from a remote LAN party, which may lead to buffer overflows and potentially to remote code execution on the ipmitool side. This is especially dangerous if ipmitool is run as a privileged user. This problem is fixed in version 1.8.19. Se detectó que varias funciones en ipmitool versiones anteriores a 1.8.19, descuidan la comprobación apropiada de los datos recibidos desde una parte de la LAN remota, lo que puede conllevar a desbordamientos de búfer y potencialmente a una ejecución de código remota en el lado de ipmitool. Esto es especialmente peligroso si ipmitool se ejecuta como un usuario privilegiado. • http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00031.html https://github.com/ipmitool/ipmitool/commit/e824c23316ae50beb7f7488f2055ac65e8b341f2 https://github.com/ipmitool/ipmitool/security/advisories/GHSA-g659-9qxw-p7cp https://lists.debian.org/debian-lts-announce/2020/02/msg00006.html https://lists.debian.org/debian-lts-announce/2021/06/msg00029.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K2BPW66KDP4H36AGZXLED57A3O2Y6EQW https://lists.fedoraproject.org/ • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 8.1EPSS: 0%CPEs: 3EXPL: 0CVE-2020-8632 – cloud-init: Too short random password length in cc_set_password in config/cc_set_passwords.py
https://notcve.org/view.php?id=CVE-2020-8632
In cloud-init through 19.4, rand_user_password in cloudinit/config/cc_set_passwords.py has a small default pwlen value, which makes it easier for attackers to guess passwords. En cloud-init versiones hasta 19.4, la función rand_user_password en el archivo cloudinit/config/cc_set_passwords.py posee un pequeño valor predeterminado de pwlen, lo que facilita a atacantes adivinar las contraseñas. A flaw was found in cloud-init, where it uses short passwords when generating a random password in new instances. Depending on the instance configuration, a remote or local attacker may abuse this vulnerability to guess the password of the victim user. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795 https://github.com/canonical/cloud-init/pull/189 https://lists.debian.org/debian-lts-announce/2020/02/msg00021.html https://access.redhat.com/security/cve/CVE-2020-8632 https://bugzilla.redhat.com/show_bug.cgi?id=1798728 • CWE-330: Use of Insufficiently Random Values CWE-521: Weak Password Requirements •
CVSS: 8.1EPSS: 0%CPEs: 3EXPL: 0CVE-2020-8631 – cloud-init: Use of random.choice when generating random password
https://notcve.org/view.php?id=CVE-2020-8631
cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict passwords, because rand_str in cloudinit/util.py calls the random.choice function. cloud-init versiones hasta 19.4 se basa en Mersenne Twister para una contraseña aleatoria, lo que facilita a atacantes predecir contraseñas, porque la función rand_str en el archivo cloudinit/util.py llama a la función random.choice. A flaw was found in cloud-init, where it uses the random.choice function when creating sensitive random strings used for generating a random password in new instances. Depending on the instance configuration, a remote or local attacker may abuse this vulnerability to guess the password of the victim user. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795 https://github.com/canonical/cloud-init/pull/204 https://lists.debian.org/debian-lts-announce/2020/02/msg00021.html https://access.redhat.com/security/cve/CVE-2020-8631 https://bugzilla.redhat.com/show_bug.cgi?id=1798731 • CWE-330: Use of Insufficiently Random Values •