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openSUSE-SU-2018:1198-1: moderate: Security update for apache2
openSUSE Security Update: Security update for apache2

Announcement ID: openSUSE-SU-2018:1198-1
Rating: moderate
References: #1086774 #1086775 #1086813 #1086814 #1086817
Cross-References: CVE-2017-15710 CVE-2017-15715 CVE-2018-1283
CVE-2018-1301 CVE-2018-1302 CVE-2018-1303
Affected Products:
openSUSE Leap 42.3

An update that fixes 7 vulnerabilities is now available.


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]

* CVE-2018-1302: when an HTTP/2 stream was destroyed after being
handled, it could have written a NULL pointer potentially to an
already freed memory. The memory pools maintained by the server make
this vulnerability hard to trigger in usual configurations, the
reporter and the team could not reproduce it outside debug builds, so
it is classified as low risk. [bsc#1086820]

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Patch Instructions:

To install this openSUSE 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:

- openSUSE Leap 42.3:

zypper in -t patch openSUSE-2018-438=1

Package List:

- openSUSE Leap 42.3 (i586 x86_64):


- openSUSE Leap 42.3 (noarch):



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