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Ubuntu 21.04: USN-5009-1 Critical: libslirp Information Leak

Several security issues were fixed in libslirp.. =========================================================================Ubuntu Security Notice USN-5009-1 July 15, 2021 libslirp vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS Summary: Several security issues were fixed in libslirp. Software Description: - libslirp: General purpose TCP-IP emulator library 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 21.04: libslirp0 4.4.0-1ubuntu0.1 Ubuntu 20.10: libslirp0 4.3.1-1ubuntu0.1 Ubuntu 20.04 LTS: libslirp0 4.1.0-2ubuntu2.2 After a standard system update you need to reboot your computer to make all the necessary changes. References: CVE-2020-29129, CVE-2020-29130, CVE-2021-3592, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595 Package Information: https://launchpad.net/ubuntu/+source/libslirp/4.4.0-1ubuntu0.1 https://launchpad.net/ubuntu/+source/libslirp/4.3.1-1ubuntu0.1 https://launchpad.net/ubuntu/+source/libslirp/4.1.0-2ubuntu2.2 . Patches addressing libslirp security issues can be found across multiple Ubuntu releases. Ensure your systems are up-to-date to prevent data exposures.. libslirp Updates, Ubuntu Security,Information Leak Fix, TCP-IP Emulator, 2021 Security Advisories. . Severity: Critical. LinuxSecurity.com Team

Jul 15, 2021 •Critical Ubuntu