CVSS: 7.8EPSS: 0%CPEs: 35EXPL: 0CVE-2023-0494 – X.Org Server DeepCopyPointerClasses Use-After-Free Local Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2023-0494
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions. This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the DeepCopyPointerClasses function. • https://bugzilla.redhat.com/show_bug.cgi?id=2165995 https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec https://lists.x.org/archives/xorg-announce/2023-February/003320.html https://security.gentoo.org/glsa/202305-30 https://access.redhat.com/security/cve/CVE-2023-0494 • CWE-416: Use After Free •
CVSS: 8.8EPSS: 0%CPEs: 14EXPL: 2CVE-2022-4254 – sssd: libsss_certmap fails to sanitise certificate data used in LDAP filters
https://notcve.org/view.php?id=CVE-2022-4254
sssd: libsss_certmap fails to sanitise certificate data used in LDAP filters A vulnerability was found in SSSD, in the libsss_certmap functionality. PKINIT enables a client to authenticate to the KDC using an X.509 certificate and the corresponding private key, rather than a passphrase or keytab. FreeIPA uses mapping rules to map a certificate presented during a PKINIT authentication request to the corresponding principal. The mapping filter is vulnerable to LDAP filter injection. The search result can be influenced by values in the certificate, which may be attacker controlled. • https://access.redhat.com/security/cve/CVE-2022-4254 https://bugzilla.redhat.com/show_bug.cgi?id=2149894 https://github.com/SSSD/sssd/commit/a2b9a84460429181f2a4fa7e2bb5ab49fd561274 https://github.com/SSSD/sssd/issues/5135 https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html • CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') •
CVSS: 6.8EPSS: 0%CPEs: 15EXPL: 0CVE-2022-3916 – Keycloak: session takeover with oidc offline refreshtokens
https://notcve.org/view.php?id=CVE-2022-3916
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user. Se encontró una falla en el alcance offline_access en Keycloak. Este problema afectaría más a los usuarios de ordenadores compartidos (especialmente si las cookies no se borran), debido a la falta de validación de la sesión root y a la reutilización de los identificadores de sesión en las sesiones de autenticación de usuario y root. • https://access.redhat.com/errata/RHSA-2022:8961 https://access.redhat.com/errata/RHSA-2022:8962 https://access.redhat.com/errata/RHSA-2022:8963 https://access.redhat.com/errata/RHSA-2022:8964 https://access.redhat.com/errata/RHSA-2022:8965 https://access.redhat.com/errata/RHSA-2023:1043 https://access.redhat.com/errata/RHSA-2023:1044 https://access.redhat.com/errata/RHSA-2023:1045 https://access.redhat.com/errata/RHSA-2023:1047 https://access.redhat.com/errata/RHSA • CWE-384: Session Fixation CWE-613: Insufficient Session Expiration •
CVSS: 5.5EPSS: 0%CPEs: 21EXPL: 0CVE-2021-3659 – kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c
https://notcve.org/view.php?id=CVE-2021-3659
A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability. Se ha encontrado un fallo de desreferencia de puntero NULL en el subsistema de red inalámbrica IEEE versión 802.15.4 del kernel de Linux en la forma en que el usuario cierra la conexión LR-WPAN. Este fallo permite a un usuario local bloquear el sistema. • https://access.redhat.com/security/cve/CVE-2021-3659 https://bugzilla.redhat.com/show_bug.cgi?id=1975949 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8 • CWE-252: Unchecked Return Value CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 34EXPL: 0CVE-2021-3669 – kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts
https://notcve.org/view.php?id=CVE-2021-3669
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS. Se ha encontrado un fallo en el kernel de Linux. La medición del uso de la memoria compartida no escala con grandes recuentos de segmentos de memoria compartida, lo que podría conllevar a el agotamiento de recursos y el DoS. • https://access.redhat.com/security/cve/CVE-2021-3669 https://bugzilla.redhat.com/show_bug.cgi?id=1980619 https://bugzilla.redhat.com/show_bug.cgi?id=1986473 https://security-tracker.debian.org/tracker/CVE-2021-3669 • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •