It was found that the fix for CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and CVE-2018-10926 was incomplete. A remote, authenticated attacker could use one of these flaws to execute arbitrary code, create arbitrary files, or cause denial of service on glusterfs server nodes via symlinks to relative paths.

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.

According to the versions of the glusterfs packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A buffer overflow on the heap was found in     gf_getspec_req RPC request. A remote, authenticated     attacker could use this flaw to cause denial of service     and read arbitrary files on glusterfs server     node.(CVE-2018-14653)

  - It was found that the fix for CVE-2018-10927,     CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and     CVE-2018-10926 was incomplete. A remote, authenticated     attacker could use one of these flaws to execute     arbitrary code, create arbitrary files, or cause denial     of service on glusterfs server nodes via symlinks to     relative paths.(CVE-2018-14651)

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

According to the versions of the glusterfs packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - It was found that the fix for CVE-2018-10927,     CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and     CVE-2018-10926 was incomplete. A remote, authenticated     attacker could use one of these flaws to execute     arbitrary code, create arbitrary files, or cause denial     of service on glusterfs server nodes via symlinks to     relative paths.(CVE-2018-14651)

  - 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)

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

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.

Multiple security vulnerabilities were discovered in GlusterFS, a clustered file system. Buffer overflows and path traversal issues may lead to information disclosure, denial of service or the execution of arbitrary code.

CVE-2018-14651

It was found that the fix for CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, and CVE-2018-10926 was incomplete. A remote, authenticated attacker could use one of these flaws to execute arbitrary code, create arbitrary files, or cause denial of service on glusterfs server nodes via symlinks to relative paths.

CVE-2018-14652

The Gluster file system 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-2018-14653

The Gluster file system 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-2018-14659

The Gluster file system 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-2018-14661

It was found that usage of snprintf function in feature/locks translator of glusterfs server was vulnerable to a format string attack. A remote, authenticated attacker could use this flaw to cause remote denial of service.

For Debian 8 'Jessie', these problems have been fixed in version 3.5.2-2+deb8u5.

We recommend that you upgrade your glusterfs packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. 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-2018:3432 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
140943	EulerOS Virtualization for ARM 64 3.0.6.0 : glusterfs (EulerOS-SA-2020-1995)	Nessus	Huawei Local Security Checks	high
139953	EulerOS 2.0 SP8 : glusterfs (EulerOS-SA-2020-1850)	Nessus	Huawei 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
118733	Debian DLA-1565-1 : glusterfs security update	Nessus	Debian 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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