==========================================================================
\nUbuntu Security Notice USN-5310-1
\nMarch 01, 2022<\/p>\n
glibc vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 21.10
\n– Ubuntu 20.04 LTS
\n– Ubuntu 18.04 LTS<\/p>\n
Summary:<\/p>\n
Several security issues were fixed in GNU C Library.<\/p>\n
Software Description:
\n– glibc: GNU C Library<\/p>\n
Details:<\/p>\n
Jan Engelhardt, Tavis Ormandy, and others discovered that the GNU C Library
\niconv feature incorrectly handled certain input sequences. An attacker
\ncould possibly use this issue to cause the GNU C Library to hang or crash,
\nresulting in a denial of service. This issue only affected Ubuntu 18.04 LTS
\nand Ubuntu 20.04 LTS. (CVE-2016-10228, CVE-2019-25013, CVE-2020-27618,
\nCVE-2020-29562, CVE-2021-3326)<\/p>\n
Jason Royes and Samuel Dytrych discovered that the GNU C Library
\nincorrectly handled signed comparisons on ARMv7 targets. A remote attacker
\ncould use this issue to cause the GNU C Library to crash, resulting in a
\ndenial of service, or possibly execute arbitrary code. This issue only
\naffected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-6096)<\/p>\n
It was discovered that the GNU C Library nscd daemon incorrectly handled
\ncertain netgroup lookups. An attacker could possibly use this issue to
\ncause the GNU C Library to crash, resulting in a denial of service. This
\nissue only affected Ubuntu 20.04 LTS. (CVE-2021-27645)<\/p>\n
It was discovered that the GNU C Library wordexp function incorrectly
\nhandled certain patterns. An attacker could use this issue to cause the
\nGNU C Library to crash, resulting in a denial of service, or possibly
\nobtain sensitive information. This issue only affected Ubuntu 18.04 LTS and
\nUbuntu 20.04 LTS. (CVE-2021-35942)<\/p>\n
It was discovered that the GNU C Library realpath function incorrectly
\nhandled return values. An attacker could possibly use this issue to obtain
\nsensitive information. This issue only affected Ubuntu 21.10.
\n(CVE-2021-3998)<\/p>\n
It was discovered that the GNU C library getcwd function incorrectly
\nhandled buffers. An attacker could use this issue to cause the GNU C
\nLibrary to crash, resulting in a denial of service, or possibly execute
\narbitrary code. (CVE-2021-3999)<\/p>\n
It was discovered that the GNU C Library sunrpc module incorrectly handled
\nbuffer lengths. An attacker could possibly use this issue to cause the GNU
\nC Library to crash, resulting in a denial of service. (CVE-2022-23218,
\nCVE-2022-23219)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 21.10:
\nlibc6 2.34-0ubuntu3.2<\/p>\n
Ubuntu 20.04 LTS:
\nlibc6 2.31-0ubuntu9.7<\/p>\n
Ubuntu 18.04 LTS:
\nlibc6 2.27-3ubuntu1.5<\/p>\n
After a standard system update you need to reboot your computer to make
\nall the necessary changes.<\/p>\n
References:
\nhttps:\/\/ubuntu.com\/security\/notices\/USN-5310-1
\nCVE-2016-10228, CVE-2019-25013, CVE-2020-27618, CVE-2020-29562,
\nCVE-2020-6096, CVE-2021-27645, CVE-2021-3326, CVE-2021-35942,
\nCVE-2021-3998, CVE-2021-3999, CVE-2022-23218, CVE-2022-23219<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/glibc\/2.34-0ubuntu3.2
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/glibc\/2.31-0ubuntu9.7
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/glibc\/2.27-3ubuntu1.5<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-5310-1 March 01, 2022 glibc vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS Summary: Several security issues were fixed in GNU C Library. Software Description: – glibc: GNU C Library Details: Jan Engelhardt, Tavis Ormandy, …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-21199","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/21199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=21199"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/21199\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=21199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=21199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=21199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}