Vulnerabilities > CVE-2015-5259 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apache Subversion 1.9.0/1.9.1/1.9.2
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
COMPLETE Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 3 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2015-6EFA349A85.NASL description 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 last seen 2020-06-05 modified 2016-03-04 plugin id 89276 published 2016-03-04 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/89276 title Fedora 22 : subversion-1.8.15-1.fc22 (2015-6efa349a85) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201610-05.NASL description 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. last seen 2020-06-01 modified 2020-06-02 plugin id 93992 published 2016-10-12 reporter This script is Copyright (C) 2016 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/93992 title GLSA-201610-05 : Subversion, Serf: Multiple Vulnerabilities NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2016-676.NASL description 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) last seen 2020-06-01 modified 2020-06-02 plugin id 90269 published 2016-04-01 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/90269 title Amazon Linux AMI : mod_dav_svn / subversion (ALAS-2016-676) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_DAADEF86A36611E58B4020CF30E32F6D.NASL description 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. last seen 2020-06-01 modified 2020-06-02 plugin id 87388 published 2015-12-16 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/87388 title FreeBSD : subversion -- multiple vulnerabilities (daadef86-a366-11e5-8b40-20cf30e32f6d) NASL family Fedora Local Security Checks NASL id FEDORA_2015-AFDB0E8AAA.NASL description 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 last seen 2020-06-05 modified 2016-03-04 plugin id 89372 published 2016-03-04 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/89372 title Fedora 23 : subversion-1.9.3-1.fc23 (2015-afdb0e8aaa)