[월:] 2020년 09월

USN-4559-1: Samba update Tom Tervoort discovered that the Netlogon protocol implemented by Samba incorrectly handled the authentication scheme. A remote attacker could use this issue to forge an authentication token and steal the credentials of the domain admin. While a previous security update fixed the issue by changing the “server schannel” setting to default to “yes”, instead of “auto”, which forced a secure netlogon channel, this update provides additional improvements. For compatibility reasons with older devices, Samba now allows specifying an insecure netlogon configuration per machine. See the following link for examples: https://www.samba.org/samba/security/CVE-2020-1472.html In addition, this update adds additional server checks for the protocol attack in the client-specified challenge to provide some protection when ‘server schannel = no/auto’ and avoid the false-positive results when running the proof-of-concept exploit. Source: USN-4559-1: Samba update

USN-4558-1: libapreq2 vulnerabilities It was discovered that libapreq2 did not properly sanitize the Content-Type field in certain, crafted HTTP requests. An attacker could use this vulnerability to cause libapreq2 to crash. Source: USN-4558-1: libapreq2 vulnerabilities

USN-4557-1: Tomcat vulnerabilities It was discovered that the Tomcat realm implementations incorrectly handled passwords when a username didn’t exist. A remote attacker could possibly use this issue to enumerate usernames. (CVE-2016-0762) Alvaro Munoz and Alexander Mirosh discovered that Tomcat incorrectly limited use of a certain utility method. A malicious application could possibly use this to bypass Security Manager restrictions. (CVE-2016-5018) It was discovered that Tomcat incorrectly controlled reading system properties. A malicious application could possibly use this to bypass Security Manager restrictions. (CVE-2016-6794) It was discovered that Tomcat incorrectly controlled certain configuration parameters. A malicious application could possibly use this to bypass Security Manager restrictions. (CVE-2016-6796) It was discovered that Tomcat incorrectly limited access to global JNDI resources. A malicious application could use this to access any global JNDI resource without an explicit ResourceLink. (CVE-2016-6797) Regis Leroy discovered that Tomcat [ more… ]

USN-4556-1: netqmail vulnerabilities It was discovered that netqmail did not properly handle certain input. Both remote and local attackers could use this vulnerability to cause netqmail to crash or execute arbitrary code. (CVE-2005-1513, CVE-2005-1514, CVE-2005-1515) It was discovered that netqmail did not properly handle certain input when validating email addresses. An attacker could use this to bypass email address validation. (CVE-2020-3811) It was discovered that netqmail did not properly handle certain input when validating email addresses. An attacker could use this vulnerability to cause netqmail to disclose sensitive information. (CVE-2020-3812) Source: USN-4556-1: netqmail vulnerabilities