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Fedora 36: FEDORA-2023-8b0938312e Important Security Update for Libsignal

fedora
Calendar Grey April 29, 2023
Dist Fedora Esm H88
Important announcement for libsignal-protocol-c: a crucial update is now available addressing an unsigned integer overflow issue in protobuf-c, vital for Fedora users
Backport a fix for [CVE-2022-48468](https://www.cve.org/CVERecord?id=CVE-2022-48468) for [protobuf-c](https://github.com/protobuf-c/protobuf-c), which is bundled in `libsignal-prot...

Summary

This is a ratcheting forward secrecy protocol that works in synchronous

and asynchronous messaging environments.

Backport a fix for [CVE-2022-48468](https://www.cve.org/CVERecord?id=CVE-2022-48468) for

[protobuf-c](https://github.com/protobuf-c/protobuf-c), which is bundled in

`libsignal-protocol-c`. https://github.com/protobuf-c/protobuf-c/commit/ec3d900001a13ccdaa8aef996b34c61159c76217

https://github.com/protobuf-c/protobuf-c/issues/499

https://github.com/protobuf-c/protobuf-c/pull/513

https://github.com/protobuf-c/protobuf-c/releases/tag/v1.4.1

* Wed Apr 19 2023 Randy Barlow - 2.3.3-7

- Fix CVE-2022-48468: unsigned integer overflow (#2186673).

[ 1 ] Bug #2186674 - CVE-2022-48468 libsignal-protocol-c: protobuf-c: an unsigned integer overflow in parse_required_member [epel-8]

https://bugzilla.redhat.com/show_bug.cgi?id=2186674

[ 2 ] Bug #2186675 - CVE-2022-48468 libsignal-protocol-c: protobuf-c: an unsigned integer overflow in parse_required_member [fedora-36]

https://bugzilla.redhat.com/show_bug.cgi?id=2186675

su -c 'dnf upgrade --advisory FEDORA-2023-8b0938312e' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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Change Log

References

Update Instructions

Severity
important
Lowest
Low
Medium
High
Critical

Product: Fedora 36
Version: 2.3.3
Release: 7.fc36
Summary: Signal Protocol C library

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