Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.
NVD-CWE-noinfo
CVE-2022-42928
Certain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 102.4, Firefox ESR < 102.4, and Firefox < 106.
CVE-2022-42929
If a website called window.print()
in a particular way, it could cause a denial of service of the browser, which may persist beyond browser restart depending on the user’s session restore settings. This vulnerability affects Thunderbird < 102.4, Firefox ESR < 102.4, and Firefox < 106.
CVE-2022-42789
An issue in code signature validation was addressed with improved checks. This issue is fixed in macOS Big Sur 11.7, macOS Ventura 13, macOS Monterey 12.6. An app may be able to access user-sensitive data.
CVE-2022-42790
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.7, macOS Ventura 13, iOS 16, iOS 15.7 and iPadOS 15.7, macOS Monterey 12.6. A user may be able to view restricted content from the lock screen.
CVE-2022-42796
This issue was addressed by removing the vulnerable code. This issue is fixed in iOS 15.7 and iPadOS 15.7, macOS Ventura 13. An app may be able to gain elevated privileges.