sudo_noexec.so in Sudo before 1.8.15 on Linux might allow local users to bypass intended noexec command restrictions via an application that calls the (1) system or (2) popen function.

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - sudo: noexec bypass via wordexp() (CVE-2016-7076)

  - sudo before 1.8.12 does not ensure that the TZ environment variable is associated with a zoneinfo file,     which allows local users to open arbitrary files for read access (but not view file contents) by running a     program within an sudo session, as demonstrated by interfering with terminal output, discarding kernel-log     messages, or repositioning tape drives. (CVE-2014-9680)

  - sudoedit in Sudo before 1.8.15 allows local users to gain privileges via a symlink attack on a file whose     full path is defined using multiple wildcards in /etc/sudoers, as demonstrated by /home/*/*/file.txt.
    (CVE-2015-5602)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

An update for sudo is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.

Security Fix(es) :

* It was discovered that the sudo noexec restriction could have been bypassed if application run via sudo executed system(), popen(), or wordexp() C library functions with a user-supplied argument. A local user permitted to run such application via sudo with noexec restriction could use these flaws to execute arbitrary commands with elevated privileges. (CVE-2016-7032, CVE-2016-7076)

These issues were discovered by Florian Weimer (Red Hat).

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - Fixes (CVE-2017-1000367) Resolves: rhbz#1455399

  - Update noexec syscall blacklist

  - Fixes (CVE-2016-7032, CVE-2016-7076) Resolves:
    rhbz#1391938

  - RHEL-6.9 erratum

  - Fix race condition when creating /var/log/sudo-io     direcotry Resolves: rhbz#1365156

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

  - It was discovered that the sudo noexec restriction     could have been bypassed if application run via sudo     executed system(), popen(), or wordexp() C library     functions with a user-supplied argument. A local user     permitted to run such application via sudo with noexec     restriction could use these flaws to execute arbitrary     commands with elevated privileges. (CVE-2016-7032,     CVE-2016-7076)

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.

It was discovered that the sudo noexec restriction could have been bypassed if application run via sudo executed system() or popen() C library functions with a user supplied argument. A local user permitted to run such application via sudo with noexec restriction could use this flaw to execute arbitrary commands with elevated privileges. (CVE-2016-7032)

It was discovered that the sudo noexec restriction could have been bypassed if application run via sudo executed wordexp() C library function with a user supplied argument. A local user permitted to run such application via sudo with noexec restriction could possibly use this flaw to execute arbitrary commands with elevated privileges.
(CVE-2016-7076)

Security Fix(es) :

  - It was discovered that the sudo noexec restriction could     have been bypassed if application run via sudo executed     system(), popen(), or wordexp() C library functions with     a user-supplied argument. A local user permitted to run     such application via sudo with noexec restriction could     use these flaws to execute arbitrary commands with     elevated privileges. (CVE-2016-7032, CVE-2016-7076)

These issues were discovered by Florian Weimer (Red Hat).

An update for sudo is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.

Security Fix(es) :

* It was discovered that the sudo noexec restriction could have been bypassed if application run via sudo executed system(), popen(), or wordexp() C library functions with a user-supplied argument. A local user permitted to run such application via sudo with noexec restriction could use these flaws to execute arbitrary commands with elevated privileges. (CVE-2016-7032, CVE-2016-7076)

These issues were discovered by Florian Weimer (Red Hat).

The remote OracleVM system is missing necessary patches to address critical security updates :

  - Update noexec syscall blacklist

  - Fixes (CVE-2016-7032, CVE-2016-7076) Resolves:
    rhbz#1391937

  - RHEL-6.8 erratum

  - fixed a bug causing that non-root users can list     privileges of other users Resolves: rhbz#1312481

  - RHEL-6.8 erratum

  - fixed handling of closefrom_override defaults option     Resolves: rhbz#1309976

  - RHEL-6.8 erratum

  - fixed potential getcwd failure, resulting in Null     pointer exception Resolves: rhbz#1284886

  - RHEL-6.8 erratum

  - fixed sssd's detection of user with zero rules Resolves:
    rhbz#1220480

  - RHEL-6.8 erratum

  - search also by user id when fetching rules from LDAP     Resolves: rhbz#1135531

  - RHEL-6.8 erratum

  - fixed ldap's and sssd's sudoOption value and remove     quotes

  - fixed ldap's and sssd's sudoOption whitespaces parse     problem Resolves: rhbz#1144422 Resolves: rhbz#1279447

  - RHEL-6.8 erratum

  - removed defaults option requiretty from /etc/sudoers

  - backported pam_service and pam_login_service defaults     options

  - implemented a new defaults option for changing netgroup     processing semantics

  - fixed visudo's quiet cli option Resolves: rhbz#1248695     Resolves: rhbz#1247231 Resolves: rhbz#1241896 Resolves:
    rhbz#1197885 Resolves: rhbz#1233205

  - added patch to re-introduce old group processing     behaviour Resolves: rhbz#1075836

From Red Hat Security Advisory 2016:2872 :

An update for sudo is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.

Security Fix(es) :

* It was discovered that the sudo noexec restriction could have been bypassed if application run via sudo executed system(), popen(), or wordexp() C library functions with a user-supplied argument. A local user permitted to run such application via sudo with noexec restriction could use these flaws to execute arbitrary commands with elevated privileges. (CVE-2016-7032, CVE-2016-7076)

These issues were discovered by Florian Weimer (Red Hat).

This update for sudo fixes the following security issues :

  - Fix two security vulnerabilities that allowed users to     bypass sudo's NOEXEC functionality :

  - noexec bypass via system() and popen() [CVE-2016-7032,     bsc#1007766]

  - noexec bypass via wordexp() [CVE-2016-7076, bsc#1007501]

  - Fix unsafe handling of TZ environment variable.
    [CVE-2014-9680, bsc#917806]

Additionally, these non-security fixes are included in the update :

  - Fix 'ignoring time stamp from the future' message after     each boot with !tty_tickets. [bsc#899252]

  - Enable support for SASL-based authentication.
    [bsc#979531]

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

This update for sudo fixes the following issues :

  - fix two security vulnerabilities that allowed users to     bypass sudo's NOEXEC functionality :

  - noexec bypass via system() and popen() [CVE-2016-7032,     bsc#1007766]

  - noexec bypass via wordexp() [CVE-2016-7076, bsc#1007501]

Sudo was updated to the package from SUSE:SLE-12-SP2:Update, incorporating the following new feature :

  - allow dynamic groups with sudo [fate#318850]

The following bug fixes are included :

  - parse /proc/stat for boottime correctly [boo#899252]

  - enable SASL authentication [boo#979531]

This update for sudo fixes the following security issues :

  - Fix two security vulnerabilities that allowed users to     bypass sudo's NOEXEC functionality :

  - noexec bypass via system() and popen() [CVE-2016-7032,     bsc#1007766]

  - noexec bypass via wordexp() [CVE-2016-7076, bsc#1007501]

  - Fix unsafe handling of TZ environment variable.
    [CVE-2014-9680, bsc#917806] Additionally, these     non-security fixes are included in the update :

  - Fix 'ignoring time stamp from the future' message after     each boot with !tty_tickets. [bsc#899252]

  - Enable support for SASL-based authentication.
    [bsc#979531]

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

This update for sudo fixes the following issues :

  - fix two security vulnerabilities that allowed users to     bypass sudo's NOEXEC functionality :

  - noexec bypass via system() and popen() [CVE-2016-7032,     bsc#1007766]

  - noexec bypass via wordexp() [CVE-2016-7076, bsc#1007501]

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

This update for sudo fixes the following issues :

  - Fix two security vulnerabilities that allowed users to     bypass sudo's NOEXEC functionality :

  - noexec bypass via system() and popen() [CVE-2016-7032,     bsc#1007766]

  - noexec bypass via wordexp() [CVE-2016-7076, bsc#1007501]

  - The SSSD plugin would occasionally crash sudo with an     'internal error'. This issue has been fixed.
    [bsc#948973]

  - The SSSD plugin would occasionally apply @netgroups     rules from LDAP to all users rather than the @netgroup.
    This issue is now fixed. [bsc#966755]

  - When the SSSD plugin was used and a local user ran sudo,     an e-mail used to be sent to administrator because SSSD     did not support sudo rules for local users. This message     did not signify an error, however, it was only noise.
    [bsc#1008043]

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

This update for sudo fixes the following issues :

  - fix two security vulnerabilities that allowed users to     bypass sudo's NOEXEC functionality :

  - noexec bypass via system() and popen() [CVE-2016-7032,     boo#1007766]

  - noexec bypass via wordexp() [CVE-2016-7076, boo#1007501]

It was discovered that the sudo noexec restriction could have been bypassed if application run via sudo executed system(), popen() or wordexp() C library functions with a user-supplied argument. A local user permitted to run such application via sudo with noexec restriction could possibly use this flaw to execute arbitrary commands with elevated privileges.

CVE-2016-7032

noexec bypass via system() and popen()

CVE-2016-7076

noexec bypass via wordexp()

For Debian 7 'Wheezy', these problems have been fixed in version 1.8.5p2-1+nmu3+deb7u2.

We recommend that you upgrade your sudo 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.

ID	Name	Product	Family	Severity
198848	RHEL 5 : sudo (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
101533	Virtuozzo 7 : sudo / sudo-devel (VZLSA-2016-2872)	Nessus	Virtuozzo Local Security Checks	high
100530	OracleVM 3.3 / 3.4 : sudo (OVMSA-2017-0110)	Nessus	OracleVM Local Security Checks	high
99851	EulerOS 2.0 SP1 : sudo (EulerOS-SA-2017-1004)	Nessus	Huawei Local Security Checks	high
96282	Amazon Linux AMI : sudo (ALAS-2017-780)	Nessus	Amazon Linux Local Security Checks	high
95871	Scientific Linux Security Update : sudo on SL6.x, SL7.x i386/x86_64 (20161206)	Nessus	Scientific Linux Local Security Checks	high
95600	RHEL 6 / 7 : sudo (RHSA-2016:2872)	Nessus	Red Hat Local Security Checks	high
95599	OracleVM 3.3 / 3.4 : sudo (OVMSA-2016-0170)	Nessus	OracleVM Local Security Checks	high
95598	Oracle Linux 6 / 7 : sudo (ELSA-2016-2872)	Nessus	Oracle Linux Local Security Checks	high
95577	CentOS 6 / 7 : sudo (CESA-2016:2872)	Nessus	CentOS Local Security Checks	high
95556	openSUSE Security Update : sudo (openSUSE-2016-1402)	Nessus	SuSE Local Security Checks	high
95533	openSUSE Security Update : sudo (openSUSE-2016-1381)	Nessus	SuSE Local Security Checks	high
95317	SUSE SLED12 / SLES12 Security Update : sudo (SUSE-SU-2016:2904-1)	Nessus	SuSE Local Security Checks	high
95313	SUSE SLED12 / SLES12 Security Update : sudo (SUSE-SU-2016:2893-1)	Nessus	SuSE Local Security Checks	high
95312	SUSE SLES11 Security Update : sudo (SUSE-SU-2016:2891-1)	Nessus	SuSE Local Security Checks	high
95275	openSUSE Security Update : sudo (openSUSE-2016-1343)	Nessus	SuSE Local Security Checks	high
94764	Debian DLA-707-1 : sudo security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2016-7032

high

Tenable Plugins

high

high

high

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high