Sigurnosni nedostaci web poslužitelja apache2

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by - 6. travnja 2018.0

SUSE Security Update: Security update for apache2
______________________________________________________________________________

Announcement ID: SUSE-SU-2018:0879-1
Rating: important
References: #1057406 #1086774 #1086775 #1086813 #1086814
#1086817 #1086820
Cross-References: CVE-2017-15710 CVE-2017-15715 CVE-2018-1283
CVE-2018-1301 CVE-2018-1303 CVE-2018-1312

Affected Products:
SUSE OpenStack Cloud 6
SUSE Linux Enterprise Server for SAP 12-SP1
SUSE Linux Enterprise Server 12-SP1-LTSS
______________________________________________________________________________

An update that solves 6 vulnerabilities and has one errata
is now available.

Description:

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]

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

– SUSE OpenStack Cloud 6:

zypper in -t patch SUSE-OpenStack-Cloud-6-2018-593=1

– SUSE Linux Enterprise Server for SAP 12-SP1:

zypper in -t patch SUSE-SLE-SAP-12-SP1-2018-593=1

– SUSE Linux Enterprise Server 12-SP1-LTSS:

zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-593=1

Package List:

– SUSE OpenStack Cloud 6 (x86_64):

apache2-2.4.16-20.16.1
apache2-debuginfo-2.4.16-20.16.1
apache2-debugsource-2.4.16-20.16.1
apache2-example-pages-2.4.16-20.16.1
apache2-prefork-2.4.16-20.16.1
apache2-prefork-debuginfo-2.4.16-20.16.1
apache2-utils-2.4.16-20.16.1
apache2-utils-debuginfo-2.4.16-20.16.1
apache2-worker-2.4.16-20.16.1
apache2-worker-debuginfo-2.4.16-20.16.1

– SUSE OpenStack Cloud 6 (noarch):

apache2-doc-2.4.16-20.16.1

– SUSE Linux Enterprise Server for SAP 12-SP1 (ppc64le x86_64):

– SUSE Linux Enterprise Server for SAP 12-SP1 (noarch):

apache2-doc-2.4.16-20.16.1

– SUSE Linux Enterprise Server 12-SP1-LTSS (ppc64le s390x x86_64):

– SUSE Linux Enterprise Server 12-SP1-LTSS (noarch):

apache2-doc-2.4.16-20.16.1

References:

https://www.suse.com/security/cve/CVE-2017-15710.html
https://www.suse.com/security/cve/CVE-2017-15715.html
https://www.suse.com/security/cve/CVE-2018-1283.html
https://www.suse.com/security/cve/CVE-2018-1301.html
https://www.suse.com/security/cve/CVE-2018-1303.html
https://www.suse.com/security/cve/CVE-2018-1312.html
https://bugzilla.suse.com/1057406
https://bugzilla.suse.com/1086774
https://bugzilla.suse.com/1086775
https://bugzilla.suse.com/1086813
https://bugzilla.suse.com/1086814
https://bugzilla.suse.com/1086817
https://bugzilla.suse.com/1086820

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