A flaw was found in the X.Org server. The cursor code in both Xephyr and Xwayland uses the wrong type of private at creation. It uses the cursor bits type with the cursor as private, and when initiating the cursor, that overwrites the XSELINUX context.
A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through missing overflow checks during SQL array value modification. This issue exists due to an integer overflow during array modification where a remote user can trigger the overflow by providing specially crafted data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary bytes to memory and extensively read the server's memory.
A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.
A Cross-site request forgery vulnerability exists in ipa/session/loginpassword in all supported versions of IPA. This flaw allows an attacker to trick the user into submitting a request that could perform actions as the user, resulting in a loss of confidentiality and system integrity. During community penetration testing it was found that for certain HTTP end-points FreeIPA does not ensure CSRF protection. Due to implementation details one cannot use this flaw for reflection of a cookie representing already logged-in user. An attacker would always have to go through a new authentication attempt.
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).
A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system.
A Local Privilege Escalation vulnerability (from any user to root) was found in polkit's pkexec, a SUID-root program that is installed by default on every major Linux distribution.
A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virtext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.
A vulnerability was found in WebKit. The flaw is triggered when processing maliciously crafted web content that may lead to arbitrary code execution. Improved memory handling addresses the multiple memory corruption issues.
An uninitialized use flaw was found in the rendering component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=101852
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An insufficient validation of untrusted input flaw was found in the Blink component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=101195
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An integer overflow flaw was found in the PDFium component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102089
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An out of bounds write flaw was found in the V8 component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102546
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An use after free flaw was found in the WebAudio component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102381
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
A type confusion flaw was found in the V8 component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102886
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An out of bounds write flaw was found in the V8 component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102475
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An use after free flaw was found in the WebSockets component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102548
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
A heap buffer overflow flaw was found in the password manager component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102715
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An insufficient policy enforcement flaw was found in the WebSockets component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=944619
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
An use after free flaw was found in the Bluetooth component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=102506
External References:
https://chromereleases.googleblog.com/2019/12/stable-channel-update-for-desktop.html
A vulnerability was discovered in Tomcat where if a servlet context was configured with readonly=false and HTTP PUT requests were allowed, an attacker could upload a JSP file to that context and achieve code execution.