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USN-5355-1: zlib vulnerability

30 March 2022

zlib could be made to crash or run programs if it received specially crafted input.

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Releases

Packages

  • zlib - Lossless data-compression library

Details

Danilo Ramos discovered that zlib incorrectly handled memory when
performing certain deflating operations. An attacker could use this issue
to cause zlib to crash, resulting in a denial of service, or possibly
execute arbitrary code.

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 21.10
Ubuntu 20.04
Ubuntu 18.04

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

References

Related notices

  • USN-5355-2: lib32z1, zlib-bin, lib64z1, libx32z1, lib64z1-dev, libx32z1-dev, lib32z1-dev, zlib1g-dev, zlib1g, zlib
  • USN-5359-1: rsync
  • USN-5359-2: rsync
  • USN-5739-1: mariadb-test-data, mariadb-server-core-10.6, libmariadbclient-dev, mariadb-client-core-10.3, mariadb-backup, mariadb-common, mariadb-server-10.6, mariadb-plugin-connect, mariadb-plugin-gssapi-server, mariadb-plugin-spider, mariadb-plugin-rocksdb, mariadb-client-core-10.6, libmariadb3, mariadb-client-10.3, mariadb-plugin-mroonga, libmariadbd19, mariadb-plugin-tokudb, mariadb-test, mariadb-plugin-s3, mariadb-10.6, mariadb-server-10.3, mariadb-client, mariadb-plugin-cracklib-password-check, libmariadb-dev, mariadb-server, mariadb-server-core-10.3, libmariadbd-dev, mariadb-plugin-gssapi-client, mariadb-10.3, mariadb-client-10.6, mariadb-plugin-oqgraph, libmariadb-dev-compat