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×
Stay Secure with the Latest Linux Advisories
Refine advisories
X Clear Filters
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?
Loading...
Explore Latest Linux Security advisories
We found -2 articles for you...
87
security advisorydenial of serviceremote exploitDebian: DSA 1101-1 Critical: Courier Mail Server CPU Consumption Issue
Updated package.. - --------------------------------------------------------------------------Debian Security Advisory DSA 1101-1
Jun 23, 2006
•Critical
Debian
87
security advisorydebianremote accessDebian 3.0 DSA 917-1 Critical: Courier Remote Access Issue
Updated package.. - --------------------------------------------------------------------------Debian Security Advisory DSA 917-1
Dec 08, 2005
•Critical
Debian
87
security advisoryremote exploitsoftware updateDebian: DSA 820-1 Moderate: Cross-Site Scripting in Courier
Updated package.. - --------------------------------------------------------------------------Debian Security Advisory DSA 820-1
Sep 24, 2005
•Important
Debian
87
security advisorymoderatedenial of serviceDebian DSA-784-1 Moderate: Courier Service Denial Issue
Updated package.. - --------------------------------------------------------------------------Debian Security Advisory DSA 784-1
Aug 25, 2005
Debian
91
security advisorycross-site scriptingcourierGentoo: GLSA-200408-02 Advisory: SqWebMail XSS Vulnerability Alert
The SqWebMail web application, included in the Courier suite, is vulnerable to cross-site scripting attacks.. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200408-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Courier: Cross-site scripting vulnerability in SqWebMail Date: August 04, 2004 Bugs: #58020 ID: 200408-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= The SqWebMail web application, included in the Courier suite, is vulnerable to cross-site scripting attacks. Background ========= Courier is an integrated mail and groupware server based on open protocols. It provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single framework. The webmail functionality included in Courier called SqWebMail allows you to access mailboxes from a web browser. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-mta/courier = 0.45.6.20040618 Description ========== Luca Legato found that SqWebMail is vulnerable to a cross-site scripting (XSS) attack. An XSS attack allows an attacker to insert malicious code into a web-based application. SqWebMail doesn't filter appropriately data coming from message headers before displaying them. Impact ===== By sending a carefully crafted message, an attacker can inject and execute script code in the victim's browser window. This allows to modify the behaviour of the SqWebMail application, and/or leak session information such as cookies to theattacker. Workaround ========= There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of Courier. Resolution ========= All Courier users should upgrade to the latest version: # emerge sync # emerge -pv "> =mail-mta/courier-0.45.6.20040618" # emerge "> =mail-mta/courier-0.45.6.20040618" References ========= [ 1 ] CAN-2004-0591 https://www.cve.org/CVERecord?id=CVE-CAN-2004-0591 [ 2 ] XSS definition https://www.sei.cmu.edu/library/2000-cert-advisories/ Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200408-02 Concerns? ======== Security is a primary focus of 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
Aug 04, 2004
Gentoo
87
security advisorymoderateremote code executionDebian 3.0: DSA 534-1 Moderate: Exim Remote Code Execution Threat
An attacker could cause web script to be executed within the security context of the sqwebmail application.. Debian Security Advisory DSA 533-1
Jul 23, 2004
Debian
91
security advisorygentoobuffer overflowGentoo: GLSA-200403-06 Normal: Courier Remote Code Execution Threat
Remote buffer overflow vulnerabilites have been found in Courier-IMAP and Courier MTA. These exploits may allow the execution of abritrary code, allowing unauthorized access to a vulnerable system. [More...]. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200403-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Multiple remote buffer overflow vulnerabilities in Courier Date: March 26, 2004 Bugs: #45584 ID: 200403-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Remote buffer overflow vulnerabilites have been found in Courier-IMAP and Courier MTA. These exploits may allow the execution of abritrary code, allowing unauthorized access to a vulnerable system. Background ========= Courier MTA is a multiprotocol mail server suite that provides webmail, mailing lists, IMAP, and POP3 services. Courier-IMAP is a standalone server that gives IMAP access to local mailboxes. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- net-mail/courier-imap < 3.0.0 > = 3.0.0 net-mail/courier < 0.45 > = 0.45 Description ========== The vulnerabilities have been found in the 'SHIFT_JIS' converter in 'shiftjis.c' and 'ISO2022JP' converter in 'so2022jp.c'. An attacker may supply Unicode characters that exceed BMP (Basic Multilingual Plane) range, causing an overflow. Impact ===== An attacker without privileges may exploit this vulnerability remotely, allowing arbitrary code to be executed in order to gainunauthorized access. Workaround ========= While a workaround is not currently known for this issue, all users are advised to upgrade to the latest version of the affected packages. Resolution ========= All users should upgrade to the current version of the affected packages: # emerge sync # emerge -pv "> =net-mail/courier-imap-3.0.0" # emerge "> =net-mail/courier-imap-3.0.0" # ** Or; depending on your installation... ** # emerge -pv "> =net-mail/courier-0.45" # emerge "> =net-mail/courier-0.45" References ========= [ 1 ] [ 2 ] Concerns? ======== Security is a primary focus of 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
Mar 29, 2004
Gentoo
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?
Search Topics
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!