[USN-5009-2] libslirp vulnerabilities

========================================================================== Ubuntu Security Notice USN-5009-2 October 26, 2021
libslirp vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10
Summary:
Several security issues were fixed in libslirp.
Software Description: – libslirp: General purpose TCP-IP emulator library
Details:
USN-5009-1 fixed vulnerabilities in libslirp. This update provides the corresponding updates for Ubuntu 21.10.
Original advisory details:
Qiuhao Li discovered that libslirp incorrectly handled certain header data lengths. An attacker inside a guest could possibly use this issue to leak sensitive information from the host. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2020-29129, CVE-2020-29130) It was discovered that libslirp incorrectly handled certain udp packets. An attacker inside a guest could possibly use this issue to leak sensitive information from the host. (CVE-2021-3592, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: libslirp0 4.4.0-1ubuntu0.21.10.1
After a standard system update you need to reboot your computer to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5009-2 ubuntu.com/security/notices/USN-5009-1 CVE-2021-3592, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595
Package Information: launchpad.net/ubuntu/+source/libslirp/4.4.0-1ubuntu0.21.10.1