CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-1095 – kernel: netfilter: NULL pointer dereference in nf_tables due to zeroed list head
https://notcve.org/view.php?id=CVE-2023-1095
In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list -- the list head is all zeroes, this results in a NULL pointer dereference. A NULL pointer dereference flaw was found in the Linux kernel’s netfilter subsystem. The issue could occur due to an error in nf_tables_updtable while freeing a transaction object not placed on the list head. This flaw allows a local, unprivileged user to crash the system, resulting in a denial of service. • https://bugzilla.redhat.com/show_bug.cgi?id=2173973 https://github.com/torvalds/linux/commit/580077855a40741cf511766129702d97ff02f4d9 https://access.redhat.com/security/cve/CVE-2023-1095 • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 0CVE-2022-3424
https://notcve.org/view.php?id=CVE-2022-3424
A use-after-free flaw was found in the Linux kernel’s SGI GRU driver in the way the first gru_file_unlocked_ioctl function is called by the user, where a fail pass occurs in the gru_check_chiplet_assignment function. This flaw allows a local user to crash or potentially escalate their privileges on the system. • https://bugzilla.redhat.com/show_bug.cgi?id=2132640 https://github.com/torvalds/linux/commit/643a16a0eb1d6ac23744bb6e90a00fc21148a9dc https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html https://lore.kernel.org/all/20221019031445.901570-1-zyytlz.wz%40163.com https://security.netapp.com/advisory/ntap-20230406-0005 https://www.spinics.net/lists/kernel/msg4518970.html • CWE-416: Use After Free •
CVSS: 7.4EPSS: 0%CPEs: 10EXPL: 1CVE-2023-0361 – gnutls: timing side-channel in the TLS RSA key exchange code
https://notcve.org/view.php?id=CVE-2023-0361
A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection. A timing side-channel vulnerability was found in RSA ClientKeyExchange messages in GnuTLS. • https://access.redhat.com/security/cve/CVE-2023-0361 https://github.com/tlsfuzzer/tlsfuzzer/pull/679 https://gitlab.com/gnutls/gnutls/-/issues/1050 https://lists.debian.org/debian-lts-announce/2023/02/msg00015.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFIA3X4IZ3CW7SRQ2UHNHNPMRIAWF2FI https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS4KVDOG6QTALWHC2QE4Y7VPDRMLTRWQ https://lists.fedoraproject.org/archives/list/package& • CWE-203: Observable Discrepancy •
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: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2022-3560 – pesign: Local privilege escalation on pesign systemd service
https://notcve.org/view.php?id=CVE-2022-3560
A flaw was found in pesign. The pesign package provides a systemd service used to start the pesign daemon. This service unit runs a script to set ACLs for /etc/pki/pesign and /run/pesign directories to grant access privileges to users in the 'pesign' group. However, the script doesn't check for symbolic links. This could allow an attacker to gain access to privileged files and directories via a path traversal attack. • https://bugzilla.redhat.com/show_bug.cgi?id=2135420#c0 https://access.redhat.com/security/cve/CVE-2022-3560 https://bugzilla.redhat.com/show_bug.cgi?id=2135420 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •