Security update for apache2 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2018:0901-1 Final 1 1 2018-04-08T19:40:13Z current 2018-04-08T19:40:13Z 2018-04-08T19:40:13Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for apache2 This update for apache2 fixes the following issues: * CVE-2018-1283: when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a \'Session\' header leading to unexpected behavior [bsc#1086814]. * CVE-2018-1301: due to an out of bound access after a size limit being reached by reading the HTTP header, a specially crafted request could lead to remote denial of service. [bsc#1086817] * CVE-2018-1303: a specially crafted HTTP request header could lead to crash due to an out of bound read while preparing data to be cached in shared memory.[bsc#1086813] * CVE-2017-15715: a regular expression could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. leading to corruption of uploaded files.[bsc#1086774] * CVE-2018-1312: when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection. [bsc#1086775] * CVE-2017-15710: mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all. [bsc#1086820] * gensslcert: fall back to 'localhost' as hostname [bsc#1057406] The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-SLE-SERVER-12-2018-602 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ Link for SUSE-SU-2018:0901-1 https://lists.suse.com/pipermail/sle-security-updates/2018-April/003877.html E-Mail link for SUSE-SU-2018:0901-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1057406 SUSE Bug 1057406 https://bugzilla.suse.com/1086774 SUSE Bug 1086774 https://bugzilla.suse.com/1086775 SUSE Bug 1086775 https://bugzilla.suse.com/1086813 SUSE Bug 1086813 https://bugzilla.suse.com/1086814 SUSE Bug 1086814 https://bugzilla.suse.com/1086817 SUSE Bug 1086817 https://bugzilla.suse.com/1086820 SUSE Bug 1086820 https://www.suse.com/security/cve/CVE-2017-15710/ SUSE CVE CVE-2017-15710 page https://www.suse.com/security/cve/CVE-2017-15715/ SUSE CVE CVE-2017-15715 page https://www.suse.com/security/cve/CVE-2018-1283/ SUSE CVE CVE-2018-1283 page https://www.suse.com/security/cve/CVE-2018-1301/ SUSE CVE CVE-2018-1301 page https://www.suse.com/security/cve/CVE-2018-1303/ SUSE CVE CVE-2018-1303 page https://www.suse.com/security/cve/CVE-2018-1312/ SUSE CVE CVE-2018-1312 page SUSE Linux Enterprise Server 12-LTSS apache2-2.4.10-14.31.1 apache2-doc-2.4.10-14.31.1 apache2-example-pages-2.4.10-14.31.1 apache2-prefork-2.4.10-14.31.1 apache2-utils-2.4.10-14.31.1 apache2-worker-2.4.10-14.31.1 apache2-2.4.10-14.31.1 as a component of SUSE Linux Enterprise Server 12-LTSS apache2-doc-2.4.10-14.31.1 as a component of SUSE Linux Enterprise Server 12-LTSS apache2-example-pages-2.4.10-14.31.1 as a component of SUSE Linux Enterprise Server 12-LTSS apache2-prefork-2.4.10-14.31.1 as a component of SUSE Linux Enterprise Server 12-LTSS apache2-utils-2.4.10-14.31.1 as a component of SUSE Linux Enterprise Server 12-LTSS apache2-worker-2.4.10-14.31.1 as a component of SUSE Linux Enterprise Server 12-LTSS In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all. CVE-2017-15710 SUSE Linux Enterprise Server 12-LTSS:apache2-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-doc-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-example-pages-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-prefork-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-utils-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-worker-2.4.10-14.31.1 moderate 5 AV:N/AC:L/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ https://www.suse.com/security/cve/CVE-2017-15710.html CVE-2017-15710 https://bugzilla.suse.com/1086776 SUSE Bug 1086776 In Apache httpd 2.4.0 to 2.4.29, the expression specified in <FilesMatch> could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. This could be exploited in environments where uploads of some files are are externally blocked, but only by matching the trailing portion of the filename. CVE-2017-15715 SUSE Linux Enterprise Server 12-LTSS:apache2-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-doc-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-example-pages-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-prefork-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-utils-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-worker-2.4.10-14.31.1 moderate 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ https://www.suse.com/security/cve/CVE-2017-15715.html CVE-2017-15715 https://bugzilla.suse.com/1086774 SUSE Bug 1086774 In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications. CVE-2018-1283 SUSE Linux Enterprise Server 12-LTSS:apache2-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-doc-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-example-pages-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-prefork-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-utils-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-worker-2.4.10-14.31.1 important 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ https://www.suse.com/security/cve/CVE-2018-1283.html CVE-2018-1283 https://bugzilla.suse.com/1086814 SUSE Bug 1086814 A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage. CVE-2018-1301 SUSE Linux Enterprise Server 12-LTSS:apache2-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-doc-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-example-pages-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-prefork-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-utils-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-worker-2.4.10-14.31.1 important 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ https://www.suse.com/security/cve/CVE-2018-1301.html CVE-2018-1301 https://bugzilla.suse.com/1086817 SUSE Bug 1086817 A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.30 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. The vulnerability is considered as low risk since mod_cache_socache is not widely used, mod_cache_disk is not concerned by this vulnerability. CVE-2018-1303 SUSE Linux Enterprise Server 12-LTSS:apache2-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-doc-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-example-pages-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-prefork-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-utils-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-worker-2.4.10-14.31.1 important 5 AV:N/AC:L/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ https://www.suse.com/security/cve/CVE-2018-1303.html CVE-2018-1303 https://bugzilla.suse.com/1086813 SUSE Bug 1086813 In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection. CVE-2018-1312 SUSE Linux Enterprise Server 12-LTSS:apache2-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-doc-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-example-pages-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-prefork-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-utils-2.4.10-14.31.1 SUSE Linux Enterprise Server 12-LTSS:apache2-worker-2.4.10-14.31.1 moderate 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20180901-1/ https://www.suse.com/security/cve/CVE-2018-1312.html CVE-2018-1312 https://bugzilla.suse.com/1086775 SUSE Bug 1086775