USN-5699-1: GNU C Library vulnerabilities
25 October 2022
Several security issues were fixed in GNU C Library.
Releases
Packages
- glibc - GNU C Library
Details
Jan Engelhardt, Tavis Ormandy, and others discovered that the GNU C Library
iconv feature incorrectly handled certain input sequences. An attacker
could possibly use this issue to cause the GNU C Library to hang or crash,
resulting in a denial of service. (CVE-2021-3326)
It was discovered that the GNU C Library nscd daemon incorrectly handled
certain netgroup lookups. An attacker could possibly use this issue to
cause the GNU C Library to crash, resulting in a denial of service.
(CVE-2021-35942)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
libc6
-
2.23-0ubuntu11.3+esm2
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
Related notices
- USN-5310-1: libc-dev-bin, libc6-pic, libc6-i386, libc6-dev-x32, glibc-doc, libc6-armel, locales-all, nscd, libc6-s390, libc-devtools, libc6-amd64, libc6-x32, libc6-dev-armel, libc6-prof, locales, libc6-lse, libc6-dev, multiarch-support, libc-bin, glibc, libc6-dev-amd64, libc6-dev-i386, libc6, libc6-dev-s390, glibc-source