USN-6736-1: klibc vulnerabilities
16 April 2024
Several security issues were fixed in klibc.
Releases
Packages
- klibc - small utilities built with klibc for early boot
Details
It was discovered that zlib, vendored in klibc, incorrectly handled pointer
arithmetic. An attacker could use this issue to cause klibc to crash or to
possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)
Danilo Ramos discovered that zlib, vendored in klibc, incorrectly handled
memory when performing certain deflating operations. An attacker could use
this issue to cause klibc to crash or to possibly execute arbitrary code.
(CVE-2018-25032)
Evgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled
memory when performing certain inflate operations. An attacker could use
this issue to cause klibc to crash or to possibly execute arbitrary code.
(CVE-2022-37434)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 23.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
-
klibc-utils
-
2.0.4-9ubuntu2.2+esm1
Available with Ubuntu Pro
-
libklibc
-
2.0.4-9ubuntu2.2+esm1
Available with Ubuntu Pro
Ubuntu 16.04
-
klibc-utils
-
2.0.4-8ubuntu1.16.04.4+esm2
Available with Ubuntu Pro
-
libklibc
-
2.0.4-8ubuntu1.16.04.4+esm2
Available with Ubuntu Pro
Ubuntu 14.04
-
klibc-utils
-
2.0.3-0ubuntu1.14.04.3+esm3
Available with Ubuntu Pro
-
libklibc
-
2.0.3-0ubuntu1.14.04.3+esm3
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5355-1: lib32z1, lib64z1-dev, zlib1g, zlib, lib32z1-dev, libx32z1-dev, lib64z1, zlib1g-dev, libx32z1
- USN-5355-2: lib32z1, lib64z1-dev, zlib1g, zlib, lib32z1-dev, libx32z1-dev, lib64z1, zlib-bin, zlib1g-dev, libx32z1
- USN-5359-1: rsync
- USN-5359-2: rsync
- USN-5739-1: mariadb-plugin-cracklib-password-check, mariadb-10.3, libmariadbclient-dev, mariadb-server-core-10.3, libmariadb-dev-compat, libmariadbd-dev, libmariadb3, mariadb-plugin-tokudb, libmariadbd19, mariadb-10.6, mariadb-client, mariadb-plugin-rocksdb, mariadb-plugin-spider, mariadb-common, mariadb-plugin-gssapi-client, libmariadb-dev, mariadb-test-data, mariadb-backup, mariadb-plugin-s3, mariadb-server-core-10.6, mariadb-server-10.3, mariadb-plugin-mroonga, mariadb-server-10.6, mariadb-plugin-oqgraph, mariadb-client-10.6, mariadb-plugin-connect, mariadb-client-core-10.6, mariadb-test, mariadb-plugin-gssapi-server, mariadb-client-10.3, mariadb-server, mariadb-client-core-10.3
- USN-6736-2: libklibc-dev, libklibc, klibc, klibc-utils
- USN-4246-1: lib32z1, lib64z1-dev, zlib1g, zlib, zlib1g-udeb, lib32z1-dev, libx32z1-dev, lib64z1, zlib1g-dev, libx32z1
- USN-4292-1: rsync
- USN-5570-1: lib32z1, lib64z1-dev, zlib1g, zlib, lib32z1-dev, libx32z1-dev, lib64z1, zlib-bin, zlib1g-dev, libx32z1
- USN-5573-1: rsync
- USN-5570-2: lib32z1, lib64z1-dev, zlib1g, zlib, lib32z1-dev, libx32z1-dev, lib64z1, zlib1g-dev, libx32z1