USN-5009-2: libslirp vulnerabilities
Publication date
26 October 2021
Overview
Several security issues were fixed in libslirp.
Releases
Packages
- 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)
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
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 21.10 impish | libslirp0 – 4.4.0-1ubuntu0.21.10.1 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.