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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0192 Apache httpd multiple vulnerabilities 23 January 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache httpd Publisher: Apache Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-0190 CVE-2018-17199 CVE-2018-17189 Original Bulletin: https://httpd.apache.org/security/vulnerabilities_24.html - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2019-0190: mod_ssl 2.4.37 remote DoS when used with OpenSSL 1.1.1 Severity: Important Vendor: The Apache Software Foundation Versions Affected: httpd 2.4.37 Description: A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or later, due to an interaction in changes to handling of renegotiation attempts. Mitigation: All httpd users consuming mod_ssl combined with OpenSSL 1.1.1 or later should upgrade to 2.4.38 or later. Credit: The issue was identified through user bug reports. References: https://httpd.apache.org/security/vulnerabilities_24.html - -------------------------------------------------------------------------------- CVE-2018-17199: mod_session_cookie does not respect expiry time Severity: low Vendor: The Apache Software Foundation Versions Affected: httpd 2.4.0 to 2.4.37 Description: In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded. Mitigation: All httpd users deploying mod_session should upgrade to 2.4.38 or later. Credit: The issue was discovered by Diego Angulo from ImExHS. References: https://httpd.apache.org/security/vulnerabilities_24.html - -------------------------------------------------------------------------------- CVE-2018-17189: mod_http2, DoS via slow, unneeded request bodies Severity: Low Vendor: The Apache Software Foundation Versions Affected: httpd 2.4.17 to 2.4.37 Description: By sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections in Apache HTTP Server versions 2.4.37 and prior. Mitigation: All httpd users deploying mod_http2 should upgrade to 2.4.38 or later. Credit: The issue was discovered by Gal Goldshtein of F5 Networks. References: https://httpd.apache.org/security/vulnerabilities_24.html - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXEfosWaOgq3Tt24GAQhQuQ//aRKXnOW9TcroOfyOmQAfRhvyOB/+dJlt b8wWjv+1YFVGsQ2cj0BXhFtZ3VGzjdCzr5R2Mk8IHWROL2RAe5fKBjC8RZUave87 orqsX4eFdD38ZT+ateRkXE0AyNrL2JcqeDAOyjZBs6Iq3Ox6ezlqQS/Pj0/igxrG EVbOLPkifrDcK1x00K+sOvHiwpZHzeKFPLdS4+AdCsvlyz3nXW77GERl4b5Jvprj ryq/wjn74xhhiYufqn7f8DdxK0Bu2LB0nBROTkaZ8GkiGpmeHmP4eRrF63mnAoUC 3xvEC4LmFHz9QJeWZDpa4e5fitdrBNYYCpH/r+agWzrVCcbRXI9FBoRS1XP8lNtR EssGaxSuUx66fvQzIXKnCR7beGHgy9JCUuRIjFpIAh1DTm+FE4K1PlqbZDC0T+DK ih6K137J7RGXqDWN2IvvdUX0tkNmsScP6sNGw2OB7PEfv53E+Q/7vxlFM3URSXSt 24FDS3et7ellMCc9BeTx3Dq+jqiIQl/tjlbqjztj71hoka9t0CzNnmXBrTvyRl/w KIg7aERSJK0h5289A6BSHseV6xzVJvystRJCzP1ZSQXVQdHeNodh9uWx4XDDWiox oUDVwML2Ubg9EL/6uDRbNuPp2Q85KFcstECrMLaZwqD1SZ+1wHNyVgtceWXzQbba 82+hUOgwibU= =bdvw -----END PGP SIGNATURE-----