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Red Hat: RHSA-2022:0896-01 Moderate: glibc Buffer Overflow Issues

red hat
Calendar Grey March 15, 2022
Dist Redhat Esm H88
Ubuntu releases a significant security notice regarding OpenSSL improvements targeting severe vulnerabilities in Unix-like environments.
An update for glibc is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

For the update to take effect, all services linked to the glibc library must be restarted, or the system rebooted.

Summary

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.
Security Fix(es):
* glibc: Off-by-one buffer overflow/underflow in getcwd() (CVE-2021-3999)
* glibc: Stack-based buffer overflow in svcunix_create via long pathnames (CVE-2022-23218)
* glibc: Stack-based buffer overflow in sunrpc clnt_create via a long pathname (CVE-2022-23219)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat buffer overflow medium severity glibc Linux update

References

https://access.redhat.com/security/cve/CVE-2021-3999 https://access.redhat.com/security/cve/CVE-2022-23218 https://access.redhat.com/security/cve/CVE-2022-23219 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: compat-libpthread-nonshared-2.28-164.el8_5.3.aarch64.rpm glibc-debuginfo-2.28-164.el8_5.3.aarch64.rpm glibc-utils-2.28-164.el8_5.3.aarch64.rpm
ppc64le: compat-libpthread-nonshared-2.28-164.el8_5.3.ppc64le.rpm glibc-debuginfo-2.28-164.el8_5.3.ppc64le.rpm glibc-debuginfo-common-2.28-164.el8_5.3.ppc64le.rpm glibc-utils-2.28-164.el8_5.3.ppc64le.rpm
s390x: compat-libpthread-nonshared-2.28-164.el8_5.3.s390x.rpm glibc-debuginfo-2.28-164.el8_5.3.s390x.rpm glibc-debuginfo-common-2.28-164.el8_5.3.s390x.rpm glibc-utils-2.28-164.el8_5.3.s390x.rpm
x86_64: compat-libpthread-nonshared-2.28-164.el8_5.3.x86_64.rpm glibc-debuginfo-2.28-164.el8_5.3.x86_64.rpm glibc-debuginfo-common-2.28-164.el8_5.3.x86_64.rpm glibc-utils-2.28-164.el8_5.3.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source: glibc-2.28-164.el8_5.3.src.rpm
aarch64: glibc-2.28-164.el8_5.3.aarch64.rpm glibc-all-langpacks-2.28-164.el8_5.3.aarch64.rpm glibc-common-2.28-164.el8_5.3.aarch64.rpm glibc-debuginfo-2.28-164.el8_5.3.aarch64.rpm glibc-devel-2.28-164.el8_5.3.aarch64.rpm glibc-headers-2.28-164.el8_5.3.aarch64.rpm glibc-langpack-aa-2.28-164.el8_5.3.aarch64.rpm glibc-langpack-af-2.28-164.el8_5.3.aarch64.rpm glibc-langpack-agr-2.28-164.el8_5.3.aarch64.rpm

Read the Full Advisory


Advisory ID: RHSA-2022:0896-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0896
Issue date: 2022-03-15

Topic

An update for glibc is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat buffer overflow medium severity glibc Linux update

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2024637 - CVE-2021-3999 glibc: Off-by-one buffer overflow/underflow in getcwd()

2042013 - CVE-2022-23218 glibc: Stack-based buffer overflow in svcunix_create via long pathnames

2042017 - CVE-2022-23219 glibc: Stack-based buffer overflow in sunrpc clnt_create via a long pathname

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