xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation

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...

xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation

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...

RHEL 8 : tigervnc (RHSA-2023:0662)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:0662 advisory. Virtual Network Computing VNC is a remote display system which allows users to view a computing desktop environment not only on the machine where it ...

SUSE SLES12 Security Update : xorg-x11-server (SUSE-SU-2023:0284-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2023:0284-1 advisory. - CVE-2023-0494: Fixed a use-after-free in DeepCopyPointerClasses bsc1207783. Tenable has extracted the preceding description block directly from the...

EulerOS 2.0 SP8 : xorg-x11-server (EulerOS-SA-2023-1344)

According to the versions of the xorg-x11-server packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A vulnerability classified as critical was found in X.org Server. Affected by this vulnerability is the function GetCountedString of th...

RHEL 8 : tigervnc (RHSA-2023:0671)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:0671 advisory. Virtual Network Computing VNC is a remote display system which allows users to view a computing desktop environment not only on the machine where it ...

EulerOS 2.0 SP8 : tigervnc (EulerOS-SA-2023-1340)

According to the versions of the tigervnc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory,...

SUSE SLES12 Security Update : xorg-x11-server (SUSE-SU-2023:0282-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:0282-1 advisory. - CVE-2023-0494: Fixed a use-after-free in DeepCopyPointerClasses bsc1207783. Tenable has extracted the preceding description block directly...

SUSE SLES12 Security Update : xorg-x11-server (SUSE-SU-2023:0286-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:0286-1 advisory. - CVE-2023-0494: Fixed a use-after-free in DeepCopyPointerClasses bsc1207783. Tenable has extracted the preceding description block directly...

golang.org/x/crypto/ssh Man-in-the-Middle attack

The Go SSH library golang.org/x/crypto/ssh by default does not verify host keys, facilitating man-in-the-middle attacks if ClientConfig.HostKeyCallback is not set. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism...

GHSA-XHJQ-W7XM-P8QJ golang.org/x/crypto/ssh Man-in-the-Middle attack

The Go SSH library golang.org/x/crypto/ssh by default does not verify host keys, facilitating man-in-the-middle attacks if ClientConfig.HostKeyCallback is not set. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism...

Advisory ROSA-SA-2023-2095

Software: tigervnc 1.8.0 OS: rosa-server79 packageevrstring: tigervnc-1.8.0-22 CVE-ID: CVE-2022-4283 BDU-ID: None CVE-Crit: HIGH CVE-DESC: A vulnerability has been discovered in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting i...

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...

Go SSH library vulnerable to Man-in-the-Middle attacks

The Go SSH library x/crypto/ssh by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism...

Go SSH library vulnerable to Man-in-the-Middle attacks

The Go SSH library x/crypto/ssh by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism...

RHEL 9 : tigervnc (RHSA-2023:0623)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:0623 advisory. Virtual Network Computing VNC is a remote display system which allows users to view a computing desktop environment not only on the machine where it ...

OpenSSH Releases Patch for New Pre-Auth Double Free Vulnerability

The maintainers of OpenSSH have released OpenSSH 9.2 to address a number of security bugs, including a memory safety vulnerability in the OpenSSH server sshd. Tracked as CVE-2023-25136, the shortcoming has been classified as a pre-authentication double free vulnerability that was introduced in...

Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : PAM regressions (USN-5825-2)

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5825-2 advisory. USN-5825-1 fixed vulnerabilities in PAM. Unfortunately that update was incomplete and could introduce a regression. This updat...

Double Free

Overview Affected versions of this package are vulnerable to Double Free during options.kexalgorithms handling. The double free can be triggered by an unauthenticated attacker in the default configuration. Remediation A fix was pushed into the master branch but not yet published. References -...

CentOS 7 : xorg-x11-server (RHSA-2023:0046)

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:0046 advisory. - A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in...