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Overview

msgpack is an efficient binary serialization format.

Affected versions of this package are vulnerable to Use After Free in the unpacker' when it is reused after an error has occurred. An attacker can cause a crash or denial of service by repeatedly triggering errors and reusing the same unpacker` instance with untrusted input.

Workaround

This vulnerability can be mitigated by creating a new unpacker instance instead of reusing one after an error, and by discarding the Stream and Streaming Unpacker if an error occurs during streaming unpacking.

Remediation

Upgrade msgpack to version 1.2.1 or higher.

References

• GitHub Advisory
• GitHub Commit

Overview

sh is a Python subprocess replacement

Affected versions of this package are vulnerable to Improper Check for Dropped Privileges in the _uid process. An attacker can gain unauthorized access to files or resources associated with privileged supplementary groups by launching a subprocess from a privileged parent process that uses the _uid option to drop privileges.

Remediation

Upgrade sh to version 2.2.4 or higher.

References

• GitHub Advisory
• GitHub Release