CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0CVE-2023-2283 – libssh: authorization bypass in pki_verify_data_signature
https://notcve.org/view.php?id=CVE-2023-2283
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK. • http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html https://access.redhat.com/security/cve/CVE-2023-2283 https://bugzilla.redhat.com/show_bug.cgi?id=2189736 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN https://security.gentoo.org/glsa/202312-05 https://security.netapp.com/advisory/ntap-20240201-0005 https://www.libssh.org/security/advisories/CVE-2023-2283.txt • CWE-287: Improper Authentication •
CVSS: 6.5EPSS: 0%CPEs: 6EXPL: 0CVE-2023-1667 – libssh: NULL pointer dereference during rekeying with algorithm guessing
https://notcve.org/view.php?id=CVE-2023-1667
A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service. • http://www.libssh.org/security/advisories/CVE-2023-1667.txt https://access.redhat.com/security/cve/CVE-2023-1667 https://bugzilla.redhat.com/show_bug.cgi?id=2182199 https://lists.debian.org/debian-lts-announce/2023/05/msg00029.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN https://security.gentoo.org/glsa/202312-05 • CWE-476: NULL Pointer Dereference •
CVSS: 6.4EPSS: 0%CPEs: 3EXPL: 0CVE-2023-33203 – kernel: net: qcom/emac: race condition leading to use-after-free in emac_remove()
https://notcve.org/view.php?id=CVE-2023-33203
The Linux kernel before 6.2.9 has a race condition and resultant use-after-free in drivers/net/ethernet/qualcomm/emac/emac.c if a physically proximate attacker unplugs an emac based device. A race condition vulnerability was found in the Linux kernel's Qualcomm EMAC Gigabit Ethernet Controller when the user physically removes the device before cleanup in the emac_remove function. This flaw can eventually result in a use-after-free issue, possibly leading to a system crash or other undefined behaviors. • https://bugzilla.redhat.com/show_bug.cgi?id=2192667 https://bugzilla.suse.com/show_bug.cgi?id=1210685 https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.9 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6b6bc5b8bd2d4ca9e1efa9ae0f98a0b0687ace75 https://access.redhat.com/security/cve/CVE-2023-33203 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •
CVSS: 6.7EPSS: 0%CPEs: 5EXPL: 0CVE-2023-33951 – Kernel: vmwgfx: race condition leading to information disclosure vulnerability
https://notcve.org/view.php?id=CVE-2023-33951
A race condition vulnerability was found in the vmwgfx driver in the Linux kernel. The flaw exists within the handling of GEM objects. The issue results from improper locking when performing operations on an object. This flaw allows a local privileged user to disclose information in the context of the kernel. This vulnerability allows local attackers to disclose sensitive information on affected installations of Linux Kernel. • https://access.redhat.com/errata/RHSA-2023:6583 https://access.redhat.com/errata/RHSA-2023:6901 https://access.redhat.com/errata/RHSA-2023:7077 https://access.redhat.com/errata/RHSA-2024:1404 https://access.redhat.com/errata/RHSA-2024:4823 https://access.redhat.com/errata/RHSA-2024:4831 https://access.redhat.com/security/cve/CVE-2023-33951 https://bugzilla.redhat.com/show_bug.cgi?id=2218195 https://www.zerodayinitiative.com/advisories/ZDI-CAN-20110 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-667: Improper Locking •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 0CVE-2023-33952 – Kernel: vmwgfx: double free within the handling of vmw_buffer_object objects
https://notcve.org/view.php?id=CVE-2023-33952
A double-free vulnerability was found in handling vmw_buffer_object objects in the vmwgfx driver in the Linux kernel. This issue occurs due to the lack of validating the existence of an object prior to performing further free operations on the object, which may allow a local privileged user to escalate privileges and execute code in the context of the kernel. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of vmw_buffer_object objects. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. • https://access.redhat.com/errata/RHSA-2023:6583 https://access.redhat.com/errata/RHSA-2023:6901 https://access.redhat.com/errata/RHSA-2023:7077 https://access.redhat.com/errata/RHSA-2024:1404 https://access.redhat.com/errata/RHSA-2024:4823 https://access.redhat.com/errata/RHSA-2024:4831 https://access.redhat.com/security/cve/CVE-2023-33952 https://bugzilla.redhat.com/show_bug.cgi?id=2218212 https://www.zerodayinitiative.com/advisories/ZDI-CAN-20292 • CWE-415: Double Free •