Integer overflow in the read_string function in libsvn_ra_svn/marshal.c in Apache Subversion 1.9.x before 1.9.3 allows remote attackers to execute arbitrary code via an svn:// protocol string, which triggers a heap-based buffer overflow and an out-of-bounds read.

The remote host is affected by the vulnerability described in GLSA-201610-05 (Subversion, Serf: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in Subversion and Serf.
      Please review the CVE identifiers referenced below for details   Impact :

    A remote attacker could possibly execute arbitrary code with the       privileges of the process, conduct a man-in-the-middle attack, obtain       sensitive information, or cause a Denial of Service Condition.
  Workaround :

    There is no known workaround at this time.

It was found that when an SVN server (both svnserve and httpd with the mod_dav_svn module) searched the history of a file or a directory, it would disclose its location in the repository if that file or directory was not readable (for example, if it had been moved).
(CVE-2015-3187)

An integer overflow was discovered allowing remote attackers to execute arbitrary code via an svn:// protocol string, which triggers a heap-based buffer overflow and an out-of-bounds read. (CVE-2015-5259)

It was found that the mod_authz_svn module did not properly restrict anonymous access to Subversion repositories under certain configurations when used with Apache httpd 2.4.x. This could allow a user to anonymously access files in a Subversion repository, which should only be accessible to authenticated users. (CVE-2015-3184)

It was found that the mod_dav_svn module was vulnerable to a remotely triggerable heap-based buffer overflow and out-of-bounds read caused by an integer overflow when parsing skel-encoded request bodies, allowing an attacker with write access to a repository to cause a denial of service attack (on 32-bit or 64-bit servers) or possibly execute arbitrary code (on 32-bit servers only) under the context of the httpd process. (CVE-2015-5343)

This update includes the latest stable release of _Apache Subversion_, version **1.9.3**. ### User-visible changes: #### Client-side bugfixes: * svn: fix possible crash in auth credentials cache * cleanup: avoid unneeded memory growth during pristine cleanup * diff:
fix crash when repository is on server root * fix translations for commit notifications * ra_serf: fix crash in multistatus parser * svn:
report lock/unlock errors as failures * svn: cleanup user deleted external registrations * svn: allow simple resolving of binary file text conflicts * svnlook: properly remove tempfiles on diff errors * ra_serf: report built- and run-time versions of libserf * ra_serf: set Content- Type header in outgoing requests * svn: fix merging deletes of svn:eol-style CRLF/CR files * ra_local: disable zero-copy code path #### Server-side bugfixes: * mod_authz_svn: fix authz with mod_auth_kerb/mod_auth_ntlm ( [issue 4602](http://subversion.tigris.org/issues/show_bug.cgi?id=4602)) * mod_dav_svn: fix display of process ID in cache statistics * mod_dav_svn: use LimitXMLRequestBody for skel-encoded requests * svnadmin dump: preserve no-op changes * fsfs: avoid unneeded I/O when opening transactions #### Bindings bugfixes: * javahl: fix ABI incompatibility with 1.8 * javahl: allow non- absolute paths in SVNClient.vacuum ### Developer-visible changes: #### General :

  - fix patch filter invocation in svn_client_patch() * add     \@since information to config defines * fix running the     tests in compatibility mode * clarify documentation of     svn_fs_node_created_rev() #### API changes: * fix     overflow detection in svn_stringbuf_remove and _replace
    * don't ignore some of the parameters to     svn_ra_svn_create_conn3

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update includes the latest stable release of _Apache Subversion 1.8_, version **1.8.15**. This update fixes two security issues: *
**CVE-2015-3184**: Subversion's mod_authz_svn does not properly restrict anonymous access in some mixed anonymous/authenticated environments when using Apache httpd 2.4.
http://subversion.apache.org/security/CVE-2015-3184-advisory.txt *
**CVE-2015-3187**: Subversion servers, both httpd and svnserve, will reveal some paths that should be hidden by path-based authz.
http://subversion.apache.org/security/CVE-2015-3187-advisory.txt ### User- visible changes: #### Client-side bugfixes: * gpg-agent: fix crash with non- canonical $HOME * document svn:autoprops * cp: fix 'svn cp ^/A/D/H at 1 ^/A' to properly create A * resolve: improve conflict prompts for binary files * ls: improve performance of '-v' on tag directories * improved Sqlite 3.8.9 query performance regression on externals * fixed [issue 4580](http://subversion.tigris.org/issues/show_bug.cgi?id=4580): 'svn
-v st' on file externals reports '?' instead of user and revision after 'svn up' #### Client-side and server-side bugfixes: * fix a segfault with old style text delta #### Server-side bugfixes: * fsfs:
reduce memory allocation with Apache * mod_dav_svn: emit first log items as soon as possible * mod_dav_svn: use LimitXMLRequestBody for skel-encoded requests * mod_dav_svn: do not ignore skel parsing errors
* detect invalid svndiff data earlier * prevent possible repository corruption on power/disk failures * fixed [issue 4577](http://subversion.tigris.org/issues/show_bug.cgi?id=4577): Read error with nodes whose DELTA chain starts with a PLAIN rep * fixed [issue 4531](http://subversion.tigris.org/issues/show_bug.cgi?id=4531):
server-side copy (over dav) is slow and uses too much memory #### Bindings bugfixes: * swig: fix memory corruption in svn_client_copy_source_t ### Developer-visible changes: #### General:
* avoid failing some tests on versions of Python with a very old sqlite * fix Ruby tests so they don't use the users real configuration #### Bindings: * swig-pl: fix some stack memory problems

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Apache Subversion installed on the remote host is 1.9.x prior to 1.9.3 and is affected by a buffer overflow vulnerability. Specifically, these versions contain an overflow condition in the 'svn://' protocol parser. The issue is triggered as user-supplied input is not properly validated when handling 'svn://' protocol strings. This may allow a remote attacker to use a specially crafted request to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.

Subversion Project reports :

Remotely triggerable heap overflow and out-of-bounds read caused by integer overflow in the svn:// protocol parser.

Remotely triggerable heap overflow and out-of-bounds read in mod_dav_svn caused by integer overflow when parsing skel-encoded request bodies.

ID	Name	Product	Family	Severity
93992	GLSA-201610-05 : Subversion, Serf: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
90269	Amazon Linux AMI : mod_dav_svn / subversion (ALAS-2016-676)	Nessus	Amazon Linux Local Security Checks	high
89372	Fedora 23 : subversion-1.9.3-1.fc23 (2015-afdb0e8aaa)	Nessus	Fedora Local Security Checks	high
89276	Fedora 22 : subversion-1.8.15-1.fc22 (2015-6efa349a85)	Nessus	Fedora Local Security Checks	high
9069	Apache Subversion 1.9.x < 1.9.3 Buffer Overflow	Nessus Network Monitor	Web Servers	high
87388	FreeBSD : subversion -- multiple vulnerabilities (daadef86-a366-11e5-8b40-20cf30e32f6d)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2015-5259

high

Tenable Plugins

high

high

high

high

high

high