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CVE-2023-39418

Postgresql: merge fails to enforce update or select row security policies

A vulnerability was found in PostgreSQL with the use of the MERGE command, which fails to test new rows against row security policies defined for UPDATE and SELECT. If UPDATE and SELECT policies forbid some rows that INSERT policies do not forbid, a user could store such rows.

CVSS 3.1 · 3.1 Low EPSS 1.1% KEV · Not listed
Vendors
Debian Postgresql Redhat
Products
Debian Linux Postgresql Enterprise Linux and 3 more
CVE-2023-4727

Ca: token authentication bypass vulnerability

A flaw was found in dogtag-pki and pki-core. The token authentication scheme can be bypassed with a LDAP injection. By passing the query string parameter sessionID=*, an attacker can authenticate with an existing session saved in the LDAP directory server, which may lead to escalation of privilege.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Certificate System Eus Enterprise Linux Rhel Aus and 4 more
CVE-2023-4004

Kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 2 more
Products
Debian Linux Fedora Linux Kernel and 11 more
CVE-2023-42669

Samba: "rpcecho" development server allows denial of service via sleep() call on ad dc

A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task.

CVSS 3.1 · 6.5 Medium EPSS 1.9% KEV · Not listed
Vendors
Redhat Samba
Products
Enterprise Linux Enterprise Linux Eus Enterprise Linux For Ibm Z Systems and 8 more
CVE-2023-3019

Qemu: e1000e: heap use-after-free in e1000e_write_packet_to_guest()

A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Qemu Redhat
Products
Qemu Advanced Virtualization Enterprise Linux and 2 more
CVE-2023-4911

Glibc: buffer overflow in ld.so leading to privilege escalation

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

CVSS 3.1 · 7.8 High EPSS 63.8% KEV · Listed
Vendors
Canonical Debian Fedoraproject and 4 more
Products
Ubuntu Linux Debian Linux Fedora and 49 more
CVE-2023-4459

Kernel: vmxnet3: null pointer dereference in vmxnet3_rq_cleanup()

A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Aus and 5 more
CVE-2023-4001

Grub2: bypass the grub password protection feature

An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Gnu Redhat
Products
Fedora Grub2 Enterprise Linux and 1 more
CVE-2023-3961

Samba: smbd allows client access to unix domain sockets on the file system as root

A path traversal vulnerability was identified in Samba when processing client pipe names connecting to Unix domain sockets within a private directory. Samba typically uses this mechanism to connect SMB clients to remote procedure call (RPC) services like SAMR LSA or SPOOLSS, which Samba initiates on demand. However, due to inadequate sanitization of incoming client pipe names, allowing a client to send a pipe name containing Unix directory traversal characters (../). This could result in SMB clients connecting as root to Unix domain sockets outside the private directory. If an attacker or client managed to send a pipe name resolving to an external service using an existing Unix domain socket, it could potentially lead to unauthorized access to the service and consequential adverse events, including compromise or service crashes.

CVSS 3.1 · 9.1 Critical EPSS 2.7% KEV · Not listed
Vendors
Fedoraproject Redhat Samba
Products
Fedora Enterprise Linux Enterprise Linux Eus and 5 more
CVE-2023-39191

Kernel: ebpf: insufficient stack type checks in dynptr

An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Linux Redhat
Products
Fedora Linux Kernel Enterprise Linux and 2 more
CVE-2023-3899

Subscription-manager: inadequate authorization of com.redhat.rhsm1 d-bus interface allows local users to modify configuration

A vulnerability was found in subscription-manager that allows local privilege escalation due to inadequate authorization. The D-Bus interface com.redhat.RHSM1 exposes a significant number of methods to all users that could change the state of the registration. By using the com.redhat.RHSM1.Config.SetAll() method, a low-privileged local user could tamper with the state of the registration, by unregistering the system or by changing the current entitlements. This flaw allows an attacker to set arbitrary configuration directives for /etc/rhsm/rhsm.conf, which can be abused to cause a local privilege escalation to an unconfined root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Fedora Enterprise Linux Enterprise Linux Desktop and 22 more
CVE-2023-3758

Sssd: race condition during authorization leads to gpo policies functioning inconsistently

A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.

CVSS 3.1 · 7.1 High EPSS 1.0% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Fedora Sssd Codeready Linux Builder and 23 more
CVE-2023-3567

Kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This issue may allow an attacker with local user access to cause a system crash or leak internal kernel information.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Canonical Linux Redhat
Products
Ubuntu Linux Linux Kernel Enterprise Linux and 3 more
CVE-2023-4813

Glibc: potential use-after-free in gaih_inet()

A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

CVSS 3.1 · 5.9 Medium EPSS 1.9% KEV · Not listed
Vendors
Fedoraproject Gnu Netapp and 1 more
Products
Fedora Glibc Active Iq Unified Manager and 21 more
CVE-2023-4132

Kernel: smsusb: use-after-free caused by do_submit_urb()

A use-after-free vulnerability was found in the siano smsusb module in the Linux kernel. The bug occurs during device initialization when the siano device is plugged in. This flaw allows a local user to crash the system, causing a denial of service condition.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 6 more
CVE-2023-42753

Kernel: netfilter: potential slab-out-of-bound access due to integer underflow

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux and 7 more
CVE-2023-3972

Insights-client: unsafe handling of temporary files and directories

A vulnerability was found in insights-client. This security issue occurs because of insecure file operations or unsafe handling of temporary files and directories that lead to local privilege escalation. Before the insights-client has been registered on the system by root, an unprivileged local user or attacker could create the /var/tmp/insights-client directory (owning the directory with read, write, and execute permissions) on the system. After the insights-client is registered by root, an attacker could then control the directory content that insights are using by putting malicious scripts into it and executing arbitrary code as root (trivially bypassing SELinux protections because insights processes are allowed to disable SELinux system-wide).

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Aus Enterprise Linux Desktop and 21 more
CVE-2024-5953

389-ds-base: malformed userpassword hash may cause denial of service

A denial of service vulnerability was found in the 389-ds-base LDAP server. This issue may allow an authenticated user to cause a server denial of service while attempting to log in with a user with a malformed hash in their password.

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Directory Server Directory Server E4s Directory Server Eus and 3 more
CVE-2023-4806

Glibc: potential use-after-free in getaddrinfo()

A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.

CVSS 3.1 · 5.9 Medium EPSS 1.6% KEV · Not listed
Vendors
Fedoraproject Gnu Redhat
Products
Fedora Glibc Codeready Linux Builder Eus and 22 more
CVE-2023-52356

Libtiff: segment fault in libtiff in tiffreadrgbatileext() leading to denial of service

A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFReadRGBATileExt() API. This flaw allows a remote attacker to cause a heap-buffer overflow, leading to a denial of service.

CVSS 3.1 · 7.5 High EPSS 2.7% KEV · Not listed
Vendors
Apple Debian Libtiff and 1 more
Products
Ipados Iphone Os Macos and 13 more