==========================================================================
\nUbuntu Security Notice USN-5379-1
\nApril 18, 2022<\/p>\n
klibc vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 20.04 LTS
\n– Ubuntu 18.04 LTS
\n– Ubuntu 16.04 ESM
\n– Ubuntu 14.04 ESM<\/p>\n
Summary:<\/p>\n
Several security issues were fixed in klibc.<\/p>\n
Software Description:
\n– klibc: small utilities built with klibc for early boot<\/p>\n
Details:<\/p>\n
It was discovered that klibc did not properly perform
\nsome mathematical operations, leading to an integer overflow.
\nAn attacker could possibly use this issue to cause a crash,
\nresulting in a denial of service, or possibly execute
\narbitrary code. (CVE-2021-31870)<\/p>\n
It was discovered that klibc did not properly handled some
\nmemory allocations on 64 bit systems. An attacker could
\npossibly use this issue to cause a crash, resulting in a
\ndenial of service, or possibly execute arbitrary code.
\n(CVE-2021-31871)<\/p>\n
It was discovered that klibc did not properly handled some file
\nsizes values on 32 bit systems. An attacker could possibly use
\nthis issue to cause a crash, resulting in a denial of service,
\nor possibly execute arbitrary code. (CVE-2021-31872)<\/p>\n
It was discovered that klibc did not properly handled some
\nmemory allocations. An attacker could possibly use this issue
\nto cause a crash, resulting in a denial of service, or possibly
\nexecute arbitrary code. (CVE-2021-31873)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 20.04 LTS:
\nklibc-utils 2.0.7-1ubuntu5.1
\nlibklibc 2.0.7-1ubuntu5.1<\/p>\n
Ubuntu 18.04 LTS:
\nklibc-utils 2.0.4-9ubuntu2.1
\nlibklibc 2.0.4-9ubuntu2.1<\/p>\n
Ubuntu 16.04 ESM:
\nklibc-utils 2.0.4-8ubuntu1.16.04.4+esm1
\nlibklibc 2.0.4-8ubuntu1.16.04.4+esm1<\/p>\n
Ubuntu 14.04 ESM:
\nklibc-utils 2.0.3-0ubuntu1.14.04.3+esm2
\nlibklibc 2.0.3-0ubuntu1.14.04.3+esm2<\/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-5379-1
\nCVE-2021-31870, CVE-2021-31871, CVE-2021-31872, CVE-2021-31873<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/klibc\/2.0.7-1ubuntu5.1
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/klibc\/2.0.4-9ubuntu2.1<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-5379-1 April 18, 2022 klibc vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS – Ubuntu 16.04 ESM – Ubuntu 14.04 ESM Summary: Several security issues were fixed in klibc. Software Description: – klibc: small utilities built with klibc …<\/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-23353","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/23353","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=23353"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/23353\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=23353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=23353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=23353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}