The Gluster file system through version 4.1.4 is vulnerable to abuse of the 'features/index' translator. A remote attacker with access to mount volumes could exploit this via the 'GF_XATTROP_ENTRY_IN_KEY' xattrop to create arbitrary, empty files on the target server.

The remote Ubuntu 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4770-1 advisory.

    It was discovered that GlusterFS incorrectly handled network requests. An attacker could possibly use this     issue to cause a denial of service. This issue only affected Ubuntu 14.04 ESM. (CVE-2014-3619)

    It was discovered that GlusterFS incorrectly handled user permissions. An authenticated attacker could     possibly use this to add himself to a trusted storage pool and perform privileged operations on volumes.
    This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-10841)

    It was discovered that GlusterFS incorrectly handled mounting gluster volumes. An attacker could possibly     use this issue to also mount shared gluster volumes and escalate privileges through malicious cronjobs.
    This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-1088)

    It was discovered that GlusterFS incorrectly handled file paths. An attacker could possibly use this issue     to create arbitrary files and execute arbitrary code. (CVE-2018-10904)

    It was discovered that GlusterFS incorrectly handled mounting volumes. An attacker could possibly use this     issue to cause a denial of service or run arbitrary code. (CVE-2018-10907)

    It was discovered that GlusterFS incorrectly handled negative key length values. An attacker could     possibly use this issue to obtain sensitive information. (CVE-2018-10911)

    It was discovered that GlusterFS incorrectly handled FUSE requests. An attacker could use this issue to     obtain sensitive information. (CVE-2018-10913, CVE-2018-10914)

    It was discovered that GlusterFS incorrectly handled the file creation process. An authenticated attacker     could possibly use this issue to create arbitrary files and obtain sensitive information. (CVE-2018-10923)

    It was discovered that GlusterFS incorrectly handled certain inputs. An authenticated attacker could     possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 ESM.
    (CVE-2018-10924)

    It was discovered that GlusterFS incorrectly handled RPC requests. An attacker could possibly use this     issue to write files to an arbitrary location and execute arbitrary code. (CVE-2018-10926, CVE-2018-10927,     CVE-2018-10928, CVE-2018-10929, CVE-2018-10930)

    It was discovered that the fix for CVE-2018-10926, CVE-2018-10927, CVE-2018-10928, CVE-2018-10929,     CVE-2018-10930 was incomplete. A remote authenticated attacker could possibly use this issue to execute     arbitrary code or cause a denial of service. (CVE-2018-14651)

    It was discovered that GlusterFS incorrectly handled certain files. A remote authenticated attacker could     possibly use this issue to cause a denial of service. (CVE-2018-14652)

    It was discovered that GlusterFS incorrectly handled RPC requests. A remote authenticated attacker could     possibly use this issue to cause a denial of service or other unspecified impact. (CVE-2018-14653)

    It was discovered that GlusterFS incorrectly handled mount volumes operation. A remote attacker could     possibly use this issue to create arbitrary files. This issue only affected Ubuntu 18.04 ESM.
    (CVE-2018-14654)

    It was discovered that GlusterFS incorrectly handled certain files. A remote authenticated attacker could     possibly use this issue to create arbitrary files. (CVE-2018-14659)

    It was discovered that GlusterFS incorrectly handled certain inputs. A remote authenticated attacker could     possibly use this is issue to cause a denial of service. This issue only affected Ubuntu 18.04 ESM.
    (CVE-2018-14660)

    It was discovered that GlusterFS incorrectly handled strings. A remote authenticated attacker could     possibly use this issue to cause a denial of service. (CVE-2018-14661)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2806 advisory.

  - glusterfs is vulnerable to privilege escalation on gluster server nodes. An authenticated gluster client     via TLS could use gluster cli with --remote-host command to add it self to trusted storage pool and     perform privileged gluster operations like adding other machines to trusted storage pool, start, stop, and     delete volumes. (CVE-2018-10841)

  - A privilege escalation flaw was found in gluster 3.x snapshot scheduler. Any gluster client allowed to     mount gluster volumes could also mount shared gluster storage volume and escalate privileges by scheduling     malicious cronjob via symlink. (CVE-2018-1088)

  - It was found that glusterfs server does not properly sanitize file paths in the trusted.io-stats-dump     extended attribute which is used by the debug/io-stats translator. Attacker can use this flaw to create     files and execute arbitrary code. To exploit this attacker would require sufficient access to modify the     extended attributes of files on a gluster volume. (CVE-2018-10904)

  - It was found that glusterfs server is vulnerable to multiple stack based buffer overflows due to functions     in server-rpc-fopc.c allocating fixed size buffers using 'alloca(3)'. An authenticated attacker could     exploit this by mounting a gluster volume and sending a string longer that the fixed buffer size to cause     crash or potential code execution. (CVE-2018-10907)

  - A flaw was found in the way dic_unserialize function of glusterfs does not handle negative key length     values. An attacker could use this flaw to read memory from other locations into the stored dict value.
    (CVE-2018-10911)

  - An information disclosure vulnerability was discovered in glusterfs server. An attacker could issue a     xattr request via glusterfs FUSE to determine the existence of any file. (CVE-2018-10913)

  - It was found that an attacker could issue a xattr request via glusterfs FUSE to cause gluster brick     process to crash which will result in a remote denial of service. If gluster multiplexing is enabled this     will result in a crash of multiple bricks and gluster volumes. (CVE-2018-10914)

  - It was found that the mknod call derived from mknod(2) can create files pointing to devices on a     glusterfs server node. An authenticated attacker could use this to create an arbitrary device and read     data from any device attached to the glusterfs server node. (CVE-2018-10923)

  - A flaw was found in RPC request using gfs3_mknod_req supported by glusterfs server. An authenticated     attacker could use this flaw to write files to an arbitrary location via path traversal and execute     arbitrary code on a glusterfs server node. (CVE-2018-10926)

  - A flaw was found in RPC request using gfs3_lookup_req in glusterfs server. An authenticated attacker could     use this flaw to leak information and execute remote denial of service by crashing gluster brick process.
    (CVE-2018-10927)

  - A flaw was found in RPC request using gfs3_symlink_req in glusterfs server which allows symlink     destinations to point to file paths outside of the gluster volume. An authenticated attacker could use     this flaw to create arbitrary symlinks pointing anywhere on the server and execute arbitrary code on     glusterfs server nodes. (CVE-2018-10928)

  - A flaw was found in RPC request using gfs2_create_req in glusterfs server. An authenticated attacker could     use this flaw to create arbitrary files and execute arbitrary code on glusterfs server nodes.
    (CVE-2018-10929)

  - A flaw was found in RPC request using gfs3_rename_req in glusterfs server. An authenticated attacker could     use this flaw to write to a destination outside the gluster volume. (CVE-2018-10930)

  - The Gluster file system through versions 3.12 and 4.1.4 is vulnerable to a buffer overflow in the     'features/index' translator via the code handling the 'GF_XATTR_CLRLK_CMD' xattr in the 'pl_getxattr'     function. A remote authenticated attacker could exploit this on a mounted volume to cause a denial of     service. (CVE-2018-14652)

  - The Gluster file system through versions 4.1.4 and 3.12 is vulnerable to a heap-based buffer overflow in     the '__server_getspec' function via the 'gf_getspec_req' RPC message. A remote authenticated attacker     could exploit this to cause a denial of service or other potential unspecified impact. (CVE-2018-14653)

  - The Gluster file system through version 4.1.4 is vulnerable to abuse of the 'features/index' translator. A     remote attacker with access to mount volumes could exploit this via the 'GF_XATTROP_ENTRY_IN_KEY' xattrop     to create arbitrary, empty files on the target server. (CVE-2018-14654)

  - The Gluster file system through versions 4.1.4 and 3.1.2 is vulnerable to a denial of service attack via     use of the 'GF_XATTR_IOSTATS_DUMP_KEY' xattr. A remote, authenticated attacker could exploit this by     mounting a Gluster volume and repeatedly calling 'setxattr(2)' to trigger a state dump and create an     arbitrary number of files in the server's runtime directory. (CVE-2018-14659)

  - A flaw was found in glusterfs server through versions 4.1.4 and 3.1.2 which allowed repeated usage of     GF_META_LOCK_KEY xattr. A remote, authenticated attacker could use this flaw to create multiple locks for     single inode by using setxattr repetitively resulting in memory exhaustion of glusterfs server node.
    (CVE-2018-14660)

  - It was found that usage of snprintf function in feature/locks translator of glusterfs server 3.8.4, as     shipped with Red Hat Gluster Storage, was vulnerable to a format string attack. A remote, authenticated     attacker could use this flaw to cause remote denial of service. (CVE-2018-14661)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-201904-06 (GlusterFS: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in GlusterFS. Please       review the referenced CVE identifiers for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

4.1.6 GA, security fixes for: CVE-2018-14651 CVE-2018-14652 CVE-2018-14653 CVE-2018-14654 CVE-2018-14659 CVE-2018-14660 CVE-2018-14661

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

5.1 GA , security fixes for: CVE-2018-14651 CVE-2018-14652 CVE-2018-14653 CVE-2018-14654 CVE-2018-14659 CVE-2018-14660 CVE-2018-14661

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3470 advisory.

    The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include     redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH)     are installed using a special build of Red Hat Enterprise Linux with only the packages required to host     virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and     performing administrative tasks.

    Security Fix(es):

    * spice: Missing check in demarshal.py:write_validate_array_item() allows for buffer overflow and denial     of service (CVE-2018-10873)

    * glusterfs: Multiple flaws (CVE-2018-10904, CVE-2018-10907, CVE-2018-10923, CVE-2018-10926,     CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, CVE-2018-10911, CVE-2018-10914,     CVE-2018-14652, CVE-2018-14653, CVE-2018-14654, CVE-2018-14659, CVE-2018-14660, CVE-2018-14661,     CVE-2018-10913)

    * samba: Insufficient input validation in libsmbclient (CVE-2018-10858)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Michael Hanselmann (hansmi.ch) for reporting CVE-2018-10904, CVE-2018-10907,     CVE-2018-10923, CVE-2018-10926, CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930,     CVE-2018-10911, CVE-2018-10914, CVE-2018-14652, CVE-2018-14653, CVE-2018-14654, CVE-2018-14659,     CVE-2018-14660, CVE-2018-14661, and CVE-2018-10913. The CVE-2018-10873 issue was discovered by Frediano     Ziglio (Red Hat).

    Bug Fix(es):

    * When upgrading Red Hat Virtualization Host (RHVH), imgbased fails to run garbage collection on previous     layers, so new logical volumes are removed, and the boot entry points to a logical volume that was     removed.

    If the RHVH upgrade finishes successfully, the hypervisor boots successfully, even if garbage collection     fails. (BZ#1632058)

    * During the upgrade process, when lvremove runs garbage collection, it prompts for user confirmation,     causing the upgrade process to fail. Now the process uses lvremove --force when trying to remove logical     volumes and does not fail even if garbage collection fails, and as a result, the upgrade process finishes     successfully. (BZ#1632585)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3432 advisory.

  - glusterfs: glusterfs server exploitable via symlinks to relative paths (CVE-2018-14651)

  - glusterfs: Buffer overflow in features/locks translator allows for denial of service (CVE-2018-14652)

  - glusterfs: Heap-based buffer overflow via gf_getspec_req RPC message (CVE-2018-14653)

  - glusterfs: features/index translator can create arbitrary, empty files (CVE-2018-14654)

  - glusterfs: Unlimited file creation via GF_XATTR_IOSTATS_DUMP_KEY xattr allows for denial of service     (CVE-2018-14659)

  - glusterfs: Repeat use of GF_META_LOCK_KEY xattr allows for memory exhaustion (CVE-2018-14660)

  - glusterfs: features/locks translator passes an user-controlled string to snprintf without a proper format     string resulting in a denial of service (CVE-2018-14661)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Updated glusterfs packages that fix multiple security issues and bugs are now available for Red Hat Gluster Storage 3.4 on Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

GlusterFS is a key building block of Red Hat Gluster Storage. It is based on a stackable user-space design and can deliver exceptional performance for diverse workloads. GlusterFS aggregates various storage servers over network interconnections into one large, parallel network file system.

Security Fix(es) :

* glusterfs: glusterfs server exploitable via symlinks to relative paths (CVE-2018-14651)

* glusterfs: Buffer overflow in 'features/locks' translator allows for denial of service (CVE-2018-14652)

* glusterfs: Heap-based buffer overflow via 'gf_getspec_req' RPC message (CVE-2018-14653)

* glusterfs: 'features/index' translator can create arbitrary, empty files (CVE-2018-14654)

* glusterfs: Unlimited file creation via 'GF_XATTR_IOSTATS_DUMP_KEY' xattr allows for denial of service (CVE-2018-14659)

* glusterfs: Repeat use of 'GF_META_LOCK_KEY' xattr allows for memory exhaustion (CVE-2018-14660)

* glusterfs: features/locks translator passes an user-controlled string to snprintf without a proper format string resulting in a denial of service (CVE-2018-14661)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Michael Hanselmann (hansmi.ch) for reporting these issues.

This update provides the following bug fix(es) :

* MD5 instances are replaced with FIPS compliant SHA256 checksums and glusterd no longer crashes when run on a FIPS enabled machine.
(BZ#1459709)

* The flock is unlocked specifically and the status file is updated so that the reference is not leaked to any worker or agent process. As a result of this fix, all workers come up without fail. (BZ#1623749)

* All HTIME index files are checked for the specified start and end times, and the History API does not fail when multiple HTIME files exist. (BZ#1627639)

* After upgrading to Red Hat Gluster Storage 3.4 from earlier versions of Red Hat Gluster Storage, the volume size displayed by the df command was smaller than the actual volume size. This has been fixed and the df command now shows the correct size for all volumes.
(BZ#1630997)

* The algorithm to disable the eager-lock is modified and it disables only when multiple write operations are trying to modify a file at the same time. This led to performance improvement while a write operation is performed on a file irrespective of the number of times it is opened at the same time for a read operation. (BZ#1630688)

* heal-info does not consider the presence of dirty markers as an indication of split-brain and does not display these entries to be in a split-brain state. (BZ#1610743)

All users of Red Hat Gluster Storage are advised to upgrade to these updated packages, which provide numerous bug fixes and enhancements.

ID	Name	Product	Family	Severity
183640	Ubuntu 16.04 ESM / 18.04 ESM : GlusterFS vulnerabilities (USN-4770-1)	Nessus	Ubuntu Local Security Checks	high
154881	Debian DLA-2806-1 : glusterfs - LTS security update	Nessus	Debian Local Security Checks	high
123580	GLSA-201904-06 : GlusterFS: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
120711	Fedora 28 : glusterfs (2018-af9bd28cf1)	Nessus	Fedora Local Security Checks	high
120641	Fedora 29 : glusterfs (2018-986f0b7fb0)	Nessus	Fedora Local Security Checks	high
118790	RHEL 7 : Red Hat Virtualization (RHSA-2018:3470)	Nessus	Red Hat Local Security Checks	high
118583	RHEL 7 : glusterfs (RHSA-2018:3432)	Nessus	Red Hat Local Security Checks	high
118582	RHEL 6 : glusterfs (RHSA-2018:3431)	Nessus	Red Hat Local Security Checks	high

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