CVSS: 7.5EPSS: 0%CPEs: 37EXPL: 0CVE-2020-27827 – lldp/openvswitch: denial of service via externally triggered memory leak
https://notcve.org/view.php?id=CVE-2020-27827
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability. Se encontró un fallo en múltiples versiones de OpenvSwitch. Los paquetes LLDP especialmente diseñados pueden causar que una memoria se pierda cuando se asignan datos para manejar TLV opcionales específicos, potencialmente causando una denegación de servicio. • https://bugzilla.redhat.com/show_bug.cgi?id=1921438 https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D https://mail.openvswitch.org/pipermail/ovs-dev/2021&# • CWE-400: Uncontrolled Resource Consumption •
CVSS: 4.9EPSS: 0%CPEs: 2EXPL: 0CVE-2020-35513 – kernel: Nfsd failure to clear umask after processing an open or create
https://notcve.org/view.php?id=CVE-2020-35513
A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system) functionality was found in the way user create and delete object using NFSv4.2 or newer if both simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to the NFS could use this flaw to starve the resources causing denial of service. Se encontró un fallo sin máscara incorrecto durante la modificación de archivos o directorios en la funcionalidad Linux kernel NFS (sistema de archivo de red) en la manera en que el usuario crea y elimina objetos usando NFSv4.2 o más reciente si ambos acceden simultáneamente al NFS por el otro proceso que no está usando el nuevo NFSv4.2. Un usuario con acceso al NFS podría usar este fallo para privar de recursos causando una denegación de servicio • https://bugzilla.redhat.com/show_bug.cgi?id=1911309 https://patchwork.kernel.org/project/linux-nfs/patch/20180403203916.GH20297%40fieldses.org https://access.redhat.com/security/cve/CVE-2020-35513 • CWE-271: Privilege Dropping / Lowering Errors •
CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2020-25657 – m2crypto: bleichenbacher timing attacks in the RSA decryption API
https://notcve.org/view.php?id=CVE-2020-25657
A flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality. Se encontró un fallo en todas las versiones publicadas de m2crypto, donde son vulnerables a ataques de sincronización de Bleichenbacher en la API de descifrado RSA por medio del procesamiento cronometrado de texto cifrado PKCS#1 versión v1.5 válido. La mayor amenaza de esta vulnerabilidad es la confidencialidad • https://bugzilla.redhat.com/show_bug.cgi?id=1889823 https://access.redhat.com/security/cve/CVE-2020-25657 • CWE-203: Observable Discrepancy CWE-385: Covert Timing Channel •
CVSS: 5.5EPSS: 0%CPEs: 13EXPL: 0CVE-2020-27842 – openjpeg: null pointer dereference in opj_tgt_reset function in lib/openjp2/tgt.c
https://notcve.org/view.php?id=CVE-2020-27842
There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability. Se presenta un fallo en el codificador t2 de openjpeg en versiones anteriores a 2.4.0. Un atacante que sea capaz de proporcionar una entrada diseñada para ser procesada por openjpeg podría causar una desreferencia del puntero null. • https://bugzilla.redhat.com/show_bug.cgi?id=1907513 https://lists.debian.org/debian-lts-announce/2022/04/msg00006.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV https://security.gentoo.org/glsa/202101-29 https://www.debian.org/security/2021/dsa-4882 https://www.oracle.com//security-alerts/cpujul2021.html https://www.oracle.com/security-alerts/cpuApr2021.html https://access.redhat.com/security/cve/CVE-2020-27842 • CWE-125: Out-of-bounds Read •
CVSS: 7.2EPSS: 0%CPEs: 11EXPL: 2CVE-2020-27777 – kernel: powerpc: RTAS calls can be used to compromise kernel integrity
https://notcve.org/view.php?id=CVE-2020-27777
A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel. Se encontró un fallo en la manera en que RTAS manejaba los accesos a la memoria en el espacio de usuario para la comunicación del kernel. En un sistema invitado bloqueado (generalmente debido al arranque seguro) que se ejecuta en la parte superior de los hipervisores PowerVM o KVM (plataforma pseries), un usuario root como local podría usar este fallo para aumentar aún más sus privilegios a los de un kernel en ejecución A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel. • https://bugzilla.redhat.com/show_bug.cgi?id=1900844 https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764 https://www.openwall.com/lists/oss-security/2020/10/09/1 https://www.openwall.com/lists/oss-security/2020/11/23/2 https://access.redhat.com/security/cve/CVE-2020-27777 • CWE-862: Missing Authorization •