Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Stay Secure with the Latest Linux Advisories

Filter%20icon Refine advisories
X Clear Filters
X Clear Filters
View More

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Community Poll

Should Linux servers automatically install security updates?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum {0} answer(s).
Please select maximum {0} answer(s).
/main-polls/157-should-linux-servers-automatically-install-security-updates?task=poll.vote&format=json
157
radio
0
[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":0,"type":"x","order":2,"pct":0,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":1,"type":"x","order":4,"pct":100,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
bottom 200
Loading...

Explore Latest Linux Security advisories

We found -7 articles for you...
198

Arch Linux: 201902-22 High: msmtp Certificate Bypass Issue

The package msmtp before version 1.8.3-1 is vulnerable to certificate verification bypass. . Arch Linux Security Advisory ASA-201902-22 ========================================= Severity: High Date : 2019-02-17 CVE-ID : CVE-2019-8337 Package : msmtp Type : certificate verification bypass Remote : Yes Link : https://security.archlinux.org/AVG-905 Summary ====== The package msmtp before version 1.8.3-1 is vulnerable to certificate verification bypass. Resolution ========= Upgrade to 1.8.3-1. # pacman -Syu "msmtp> =1.8.3-1" The problem has been fixed upstream in version 1.8.3. Workaround ========= None. Description ========== In msmtp 1.8.2, when tls_trust_file has its default configuration, certificate-verification results are not properly checked. Impact ===== The default configuration would omit certification verification. References ========= https://marlam.de/msmtp/news/ https://security.archlinux.org/CVE-2019-8337 . The Debian Security Advisory DSA-2021-55 highlights critical vulnerabilities in `libxml2`, stressing the need for secure XML parsing and risks from malformed input. Arch Linux, msmtp, certificate issue, security advisory. . LinuxSecurity.com Team

Calendar%202 Feb 25, 2019 ArchLinux
91

Gentoo: 201206-34 Normal: Msmtp Null Spoofing Vulnerability Report

An error in the hostname matching in msmtp might enable remote attackers to conduct man-in-the-middle attacks.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201206-34 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: msmtp: X.509 NULL spoofing vulnerability Date: June 25, 2012 Bugs: #293647 ID: 201206-34 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= An error in the hostname matching in msmtp might enable remote attackers to conduct man-in-the-middle attacks. Background ========= msmtp is an SMTP client and SMTP plugin for mail user agents such as Mutt. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-mta/msmtp < 1.4.19 > = 1.4.19 Description ========== A vulnerability have been discovered in msmtp. Please review the CVE identifier referenced below for details. Impact ===== A remote attacker might employ a specially crafted certificate to conduct man-in-the-middle attacks on SSL connections made using msmtp. Workaround ========= There is no known workaround at this time. Resolution ========= All msmtp users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =mail-mta/msmtp-1.4.19" References ========= [ 1 ] CVE-2009-3942 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3942 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201206-34 Concerns? ======== Security is a primary focusof Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2012 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5/ . Critical X.509 NULL impersonation flaw found in msmtp exposes Gentoo Linux systems to potential man-in-the-middle risks. Update immediately!. msmtp security,Gentoo advisory,NULL spoofing,man-in-the-middle,hostname matching. . LinuxSecurity.com Team

Calendar%202 Jun 25, 2012 Gentoo
News Add Esm H240

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Community Poll

Should Linux servers automatically install security updates?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum {0} answer(s).
Please select maximum {0} answer(s).
/main-polls/157-should-linux-servers-automatically-install-security-updates?task=poll.vote&format=json
157
radio
0
[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":0,"type":"x","order":2,"pct":0,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":1,"type":"x","order":4,"pct":100,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
bottom 200