A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

A logic issue was addressed with improved restrictions.

An input validation issue was addressed with improved input validation.

A memory corruption issue was addressed with improved state management.

A memory initialization issue was addressed with improved memory handling.

A flaw was found in WebKitGTK. A type confusion issue was addressed with improved memory handling. Processing maliciously crafted web content may lead to arbitrary code execution.

Reference: https://webkitgtk.org/security/WSA-2020-0008.html

A flaw was found in WebKitGTK. An use after free issue was addressed with improved memory management. Processing maliciously crafted web content may lead to arbitrary code execution.

Reference: https://webkitgtk.org/security/WSA-2020-0008.html

A flaw was found in WebKitGTK. Processing maliciously crafted web content may lead to a cross site scripting attack. Description: An input validation issue was addressed with improved input validation.

Reference: https://webkitgtk.org/security/WSA-2020-0008.html

A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code execution. An attacker can get a user to visit a webpage to trigger this vulnerability.

A flaw was found in WebKitGTK. Processing maliciously crafted web content may lead to arbitrary code execution.

Reference: https://webkitgtk.org/security/WSA-2020-0008.html

A flaw was found in systemd. Attacker controlled alloca() in function unitnamepathescape() leads to a crash in systemd and ultimately a kernel panic. Systemd parses the content of /proc/self/mountinfo and each mountpoint is passed to mountsetupunit(), which calls unitnamepathescape() underneath to duplicate the string through alloca(). A local attacker who is able to mount a filesystem on a very long path can crash systemd and the whole system.

Upstream PR: https://github.com/systemd/systemd/pull/20256

Upstream commit: https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9

systemd could allow a local authenticated attacker to gain elevated privileges on the system, caused by the mishandling of numerical usernames. By sending a specially-crafted request, an attacker could exploit this vulnerability to gain elevated privileges as root.

An issue was discovered in disableprivmode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command execution in the shell can use "enable -f" for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.

In systemd before v242-rc4, it was discovered that pamsystemd does not properly sanitize the environment before using the XDGSEAT variable. It is possible for an attacker, in some particular configurations, to set a XDGSEAT environment variable which allows for commands to be checked against polkit policies using the "allowactive" element rather than "allowany".

A flaw was found in rpm. Given an RPM package signed by a trusted key, it is possible to modify it such that it still passes signature checks, but installing it corrupts the rpmdb.

An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.

An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.

curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response.

A regular expression denial of service vulnerability was found in hosted-git-info. If an application allows user input into the affected regular expression (regexp) function, shortcutMatch or fromUrl, then an attacker could craft a regexp which takes an ever increasing amount of time to process, potentially resulting in a denial of service.

IBM Cloud Pak for Security (CP4S) 1.5.0.0, 1.5.1.0, 1.6.0.0, 1.6.1.0, 1.7.0.0, and 1.7.1.0 could allow a remote authenticated attacker to execute arbitrary commands on the system by sending a specially crafted request.

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

IBM Cloud Pak for Security (CP4S) 1.7.0.0, 1.7.1.0, 1.7.2.0, and 1.8.0.0 could allow an attacker to perform unauthorized actions due to improper or missing authentication controls. IBM X-Force ID: 199282.

IBM Cloud Pak for Security (CP4S) 1.7.2.0, 1.7.1.0, and 1.7.0.0 could allow an authenticated user to obtain sensitive information in HTTP responses that could be used in further attacks against the system. IBM X-Force ID: 213651.

Browserslist is vulnerable to a denial of service, caused by a regular expression denial of service (ReDoS) during parsing of queries. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.

In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

IBM Cloud Pak for Security (CP4S) 1.7.0.0, 1.7.1.0, 1.7.2.0, and 1.8.0.0 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 207320.

IBM Cloud Pak for Security (CP4S) 1.5.0.0, 1.5.1.0, 1.6.0.0, 1.6.1.0, 1.7.0.0, and 1.7.1.0 could allow a remote authenticated attacker to obtain sensitive information through HTTP requests that could be used in further attacks against the system.