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USN-5310-2: GNU C Library vulnerabilities

7 March 2022

Several security issues were fixed in GNU C Library.

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Releases

Packages

Details

USN-5310-1 fixed several vulnerabilities in GNU. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that the GNU C library getcwd function incorrectly
handled buffers. An attacker could use this issue to cause the GNU C
Library to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2021-3999)

It was discovered that the GNU C Library sunrpc module incorrectly handled
buffer lengths. An attacker could possibly use this issue to cause the GNU
C Library to crash, resulting in a denial of service. (CVE-2022-23218,
CVE-2022-23219)

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.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

After a standard system update you need to reboot your computer to make
all the necessary changes.

Related notices

  • USN-5310-1: libc6-dev-armel, locales, libc6, locales-all, libc6-prof, libc6-dev-s390, libc6-pic, glibc-source, libc-dev-bin, glibc-doc, libc-bin, libc6-armel, multiarch-support, libc6-x32, glibc, libc6-amd64, libc6-lse, libc6-i386, nscd, libc6-dev-i386, libc6-s390, libc-devtools, libc6-dev, libc6-dev-x32, libc6-dev-amd64
  • USN-6762-1: eglibc-source, libc6-dev-armel, locales, libc6, eglibc, locales-all, libc6-prof, libc6-dev-s390, libc6-pic, glibc-source, libc-dev-bin, glibc-doc, libc-bin, libc6-armel, multiarch-support, libc6-x32, glibc, libc6-amd64, libc6-lse, libc6-i386, nscd, libc6-dev-i386, libc6-s390, libc6-dev, libc6-dev-x32, libc6-dev-amd64