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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1533 Multiple vulnerabilities have been identified in Apache HTTP Server 20 June 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache HTTP Server Publisher: The Apache Software Foundation Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-7679 CVE-2017-7668 CVE-2017-7659 CVE-2017-3169 CVE-2017-3167 Original Bulletin: https://httpd.apache.org/security/vulnerabilities_24.html Comment: This bulletin contains five (5) The Apache Software Foundation security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2017-3167: ap_get_basic_auth_pw authentication bypass Severity: Important Vendor: The Apache Software Foundation Versions Affected: httpd 2.2.0 to 2.2.32 httpd 2.4.0 to 2.4.25 Description: Use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed. Mitigation: 2.2.x users should either apply the patch available at https://www.apache.org/dist/httpd/patches/apply_to_2.2.32/CVE-2017-3167.patch or upgrade in the future to 2.2.33, which is currently unreleased. 2.4.x users should upgrade to 2.4.26. Third-party module writers SHOULD use ap_get_basic_auth_components(), available in 2.2.33 and 2.4.26, instead of ap_get_basic_auth_pw(). Modules which call the legacy ap_get_basic_auth_pw() during the authentication phase MUST either immediately authenticate the user after the call, or else stop the request immediately with an error response, to avoid incorrectly authenticating the current request. Credit: The Apache HTTP Server security team would like to thank Emmanuel Dreyfus for reporting this issue. References: https://httpd.apache.org/security_report.html - --- CVE-2017-3169: mod_ssl null pointer dereference Severity: Important Vendor: The Apache Software Foundation Versions Affected: httpd 2.2.0 to 2.2.32 httpd 2.4.0 to 2.4.25 Description: mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() during an HTTP request to an HTTPS port. Mitigation: 2.2.x users should either apply the patch available at https://www.apache.org/dist/httpd/patches/apply_to_2.2.32/CVE-2017-3169.patch or upgrade in the future to 2.2.33, which is currently unreleased. 2.4.x users should upgrade to 2.4.26. Credit: The Apache HTTP Server security team would like to thank Vasileios Panopoulos and AdNovum Informatik AG for reporting this issue. References: https://httpd.apache.org/security_report.html - --- CVE-2017-7659: mod_http2 null pointer dereference Severity: Important Vendor: The Apache Software Foundation Versions Affected: httpd 2.4.24 (unreleased) httpd 2.4.25 Description: A maliciously constructed HTTP/2 request could cause mod_http2 to dereference a NULL pointer and crash the server process. Mitigation: 2.4.25 users of mod_http2 should upgrade to 2.4.26. Credit: The Apache HTTP Server security team would like to thank Robert Å\x{154}wiÄ\x{153}cki for reporting this issue. References: https://httpd.apache.org/security_report.html - --- CVE-2017-7668: ap_find_token buffer overread Severity: Important Vendor: The Apache Software Foundation Versions Affected: httpd 2.2.32 httpd 2.4.24 (unreleased) httpd 2.4.25 Description: The HTTP strict parsing changes added in 2.2.32 and 2.4.24 introduced a bug in token list parsing, which allows ap_find_token() to search past the end of its input string. By maliciously crafting a sequence of request headers, an attacker may be able to cause a segmentation fault, or to force ap_find_token() to return an incorrect value. Mitigation: 2.2.32 users should either apply the patch available at https://www.apache.org/dist/httpd/patches/apply_to_2.2.32/CVE-2017-7668.patch or upgrade in the future to 2.2.33, which is currently unreleased. 2.4.25 users should upgrade to 2.4.26. Credit: The Apache HTTP Server security team would like to thank Javier Jiménez (javijmor@gmail.com) for reporting this issue. References: https://httpd.apache.org/security_report.html - --- CVE-2017-7679: mod_mime buffer overread Severity: Important Vendor: The Apache Software Foundation Versions Affected: httpd 2.2.0 to 2.2.32 httpd 2.4.0 to 2.4.25 Description: mod_mime can read one byte past the end of a buffer when sending a malicious Content-Type response header. Mitigation: 2.2.x users should either apply the patch available at https://www.apache.org/dist/httpd/patches/apply_to_2.2.32/CVE-2017-7679.patch or upgrade in the future to 2.2.33, which is currently unreleased. 2.4.x users should upgrade to 2.4.26. Credit: The Apache HTTP Server security team would like to thank ChenQin and Hanno Böck for reporting this issue. References: https://httpd.apache.org/security_report.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. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWUiRFYx+lLeg9Ub1AQgjwhAAgZEKB/cO+U4I2dAGFD1wg0eU/NuIsTbx 5qph+crY4U2OWA3uVuFNG1wZlW9JFD5NFb3cMWigpR6d4ZvkTXtt1pgknjfMwwt9 QRPfSTr0uIx/gBCURdGRVhcx7novBci17uVxeRStdahQoLGabxyP+ew6uZ4S6qSt wfYqLWM5NuUsD1GII7NXZTW+b55oLiGdMvid+qBbsLyLksSLT+kdQFbgK8V2H9Pv X20xIy0TxTHBafOQY4geKwejMRyWu3YzYHdY0zEGH3Fw5Ub9Jyj4oJkJyHWcSXc8 JCj/nhK7iO5Tu7ko8RpEpj/BFj7mLafPfsGU5eaDe0e71xeeCseB6a4F/aQ0PQTB ymeq8ivveYNbmds0mqfLTqnZ34oyJhQjAVM+nElYgCWkfJyyzMsi6BHMTQ5jgh/w ojk/iLAlBtHzQ4KCWG4Q9yKK3TCFdxq+0wacMhxoKuDOVXvdJgNS9Lbg7SFx2ZI+ m1C5KrKyAYt4mMbSVyI6NDkzuiTnGdkLbNzzPDvs03DfC7QU96YXc8KGEPgqeW9c E0ZKOYAbUQ9lK+OgcvOC7dYA1XZ1GyMnwUTXkBGArR8zg/YJRgnJY9C+NAM5F5Nm EWkwU27lpcKsSbPPCOuqZr3eelXWJCT2J6JHHzRY7ppmO9wdvwVVVDjFHuxcXQDy DyqCadolmlg= =w8B+ -----END PGP SIGNATURE-----