SaltStack recommends immediate patching after their disclosure of three new vulnerabilities, two of which are rated critical and can be remotely exploited without authentication.

CVE-2020-16846, CVE-2020-25592: Critical Vulnerabilities in Salt Framework Disclosed

An issue was discovered in SaltStack Salt through 3002. Sending crafted web requests to the Salt API, with the SSH client enabled, can result in shell injection.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6948-1 advisory.

    It was discovered that Salt incorrectly handled crafted web requests. A remote attacker could possibly use     this issue to run arbitrary commands. (CVE-2020-16846)

    It was discovered that Salt incorrectly created certificates with weak file permissions. (CVE-2020-17490)

    It was discovered that Salt incorrectly handled credential validation. A remote attacker could possibly     use this issue to bypass authentication. (CVE-2020-25592)

    It was discovered that Salt incorrectly handled crafted process names. An attacker could possibly use this     issue to run arbitrary commands. This issue only affected Ubuntu 18.04 LTS. (CVE-2020-28243)

    It was discovered that Salt incorrectly handled validation of SSL/TLS certificates. A remote attacker     could possibly use this issue to spoof a trusted entity. (CVE-2020-28972, CVE-2020-35662)

    It was discovered that Salt incorrectly handled credential validation. A remote attacker could possibly     use this issue to run arbitrary code. (CVE-2021-25281)

    It was discovered that Salt incorrectly handled crafted paths. A remote attacker could possibly use this     issue to perform directory traversal. (CVE-2021-25282)

    It was discovered that Salt incorrectly handled template rendering. A remote attacker could possibly this     issue to run arbitrary code. (CVE-2021-25283)

    It was discovered that Salt incorrectly handled logging. An attacker could possibly use this issue to     discover credentials. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-25284)

    It was discovered that Salt incorrectly handled crafted web requests. A remote attacker could possibly use     this issue to run arbitrary commands. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3148)

    It was discovered that Salt incorrectly handled input sanitization. A remote attacker could possibly use     this issue to run arbitrary commands. (CVE-2021-3197)

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 SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14538-1 advisory.

  - An issue was discovered in SaltStack Salt through 3002. Sending crafted web requests to the Salt API, with     the SSH client enabled, can result in shell injection. (CVE-2020-16846)

  - The TLS module within SaltStack Salt through 3002 creates certificates with weak file permissions.
    (CVE-2020-17490)

  - In SaltStack Salt through 3002, salt-netapi improperly validates eauth credentials and tokens. A user can     bypass authentication and invoke Salt SSH. (CVE-2020-25592)

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

An improper authentication vulnerability affecting users running the Salt API exists due to a validation issue when calling Salt SSH via the salt-api, An unauthenticated, remote attacker could bypass authentication by supplying any value for eauth or token to gain the ability to run commands using Salt SSH.

Several vulnerabilities were discovered in salt, a powerful remote execution manager. The flaws could result in authentication bypass and invocation of Salt SSH, creation of certificates with weak file permissions via the TLS execution module or shell injections with the Salt API using the SSH client.

This update for salt fixes the following issues :

Properly validate eauth credentials and tokens on SSH calls made by Salt API (bsc#1178319, bsc#1178362, bsc#1178361, CVE-2020-25592, CVE-2020-17490, CVE-2020-16846)

Fix disk.blkid to avoid unexpected keyword argument '__pub_user'.
(bsc#1177867)

Ensure virt.update stop_on_reboot is updated with its default value.

Do not break package building for systemd OSes.

Drop wrong mock from chroot unit test.

Support systemd versions with dot. (bsc#1176294)

Fix for grains.test_core unit test.

Fix file/directory user and group ownership containing UTF-8 characters. (bsc#1176024)

Several changes to virtualization :

  - Fix virt update when cpu and memory are changed.

  - Memory Tuning GSoC.

  - Properly fix memory setting regression in virt.update.

  - Expose libvirt on_reboot in virt states.

Support transactional systems (MicroOS).

zypperpkg module ignores retcode 104 for search(). (bsc#1159670)

Xen disk fixes. No longer generates volumes for Xen disks, but the corresponding file or block disk. (bsc#1175987)

Invalidate file list cache when cache file modified time is in the future. (bsc#1176397)

Prevent import errors when running test_btrfs unit tests.

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 fixes the following issues :

salt :

Avoid regression on 'salt-master': set passphrase for salt-ssh keys to empty string (bsc#1178485)

Properly validate eauth credentials and tokens on SSH calls made by Salt API (bsc#1178319, bsc#1178362, bsc#1178361, CVE-2020-25592, CVE-2020-17490, CVE-2020-16846)

Fix disk.blkid to avoid unexpected keyword argument '__pub_user' (bsc#1177867)

Ensure virt.update stop_on_reboot is updated with its default value

Do not break package building for systemd OSes

Drop wrong mock from chroot unit test

Support systemd versions with dot (bsc#1176294)

Fix for grains.test_core unit test

Fix file/directory user and group ownership containing UTF-8 characters (bsc#1176024)

Several changes to virtualization :

  - Fix virt update when cpu and memory are changed

  - Memory Tuning GSoC

  - Properly fix memory setting regression in virt.update

  - Expose libvirt on_reboot in virt states

Support transactional systems (MicroOS)

Zypperpkg module ignores retcode 104 for search() (bsc#1159670)

Xen disk fixes. No longer generates volumes for Xen disks, but the corresponding file or block disk (bsc#1175987)

Invalidate file list cache when cache file modified time is in the future (bsc#1176397)

Prevent import errors when running test_btrfs unit tests

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 salt fixes the following issues :

Avoid regression on 'salt-master': set passphrase for salt-ssh keys to empty string (bsc#1178485)

Properly validate eauth credentials and tokens on SSH calls made by Salt API (bsc#1178319, bsc#1178362, bsc#1178361, CVE-2020-25592, CVE-2020-17490, CVE-2020-16846)

Fix disk.blkid to avoid unexpected keyword argument '__pub_user'.
(bsc#1177867)

Ensure virt.update stop_on_reboot is updated with its default value.

Do not break package building for systemd OSes.

Drop wrong mock from chroot unit test.

Support systemd versions with dot. (bsc#1176294)

Fix for grains.test_core unit test.

Fix file/directory user and group ownership containing UTF-8 characters. (bsc#1176024)

Several changes to virtualization :

  - Fix virt update when cpu and memory are changed.

  - Memory Tuning GSoC.

  - Properly fix memory setting regression in virt.update.

  - Expose libvirt on_reboot in virt states.

Support transactional systems (MicroOS).

zypperpkg module ignores retcode 104 for search(). (bsc#1159670)

Xen disk fixes. No longer generates volumes for Xen disks, but the corresponding file or block disk. (bsc#1175987)

Invalidate file list cache when cache file modified time is in the future. (bsc#1176397)

Prevent import errors when running test_btrfs unit tests

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.

Past security updates of Salt, a remote execution manager, introduced regressions for which follow-up fixes were published :

CVE 2020-16846 regression

'salt-ssh' master key initialization fails

CVE 2021-3197 regression

Valid parameters are discarded for the SSHClient

CVE 2020-28243 follow-up

Prevent argument injection in restartcheck

CVE 2021-25282 regression

pillar_roots.write cannot write to subdirs

CVE 2021-25284 regression

The 'cmd.run' function crashes if passing tuple arg

For Debian 9 stretch, this problem has been fixed in version 2016.11.2+ds-1+deb9u10.

We recommend that you upgrade your salt packages.

For the detailed security status of salt please refer to its security tracker page at: https://security-tracker.debian.org/tracker/salt

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.

SaltStack reports multiple security vulnerabilities in Salt 3002 :

- CVE-2020-16846: Prevent shell injections in netapi ssh client.

- CVE-2020-17490: Prevent creating world readable private keys with the tls execution module.

- CVE-2020-25592: Properly validate eauth credentials and tokens along with their ACLs. Prior to this change eauth was not properly validated when calling Salt ssh via the salt-api. Any value for 'eauth' or 'token' would allow a user to bypass authentication and make calls to Salt ssh.

The remote host is affected by the vulnerability described in GLSA-202011-13 (Salt: Multiple vulnerabilities)

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

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

This update for salt fixes the following issues :

  - Avoid regression on 'salt-master': set passphrase for     salt-ssh keys to empty string (bsc#1178485)

  - Properly validate eauth credentials and tokens on SSH     calls made by Salt API (bsc#1178319, bsc#1178362,     bsc#1178361, CVE-2020-25592, CVE-2020-17490,     CVE-2020-16846)

  - Fix disk.blkid to avoid unexpected keyword argument     '__pub_user'. (bsc#1177867)

  - Ensure virt.update stop_on_reboot is updated with its     default value.

  - Do not break package building for systemd OSes.

  - Drop wrong mock from chroot unit test.

  - Support systemd versions with dot. (bsc#1176294)

  - Fix for grains.test_core unit test.

  - Fix file/directory user and group ownership containing     UTF-8 characters. (bsc#1176024)

  - Several changes to virtualization :

  - Fix virt update when cpu and memory are changed.

  - Memory Tuning GSoC.

  - Properly fix memory setting regression in virt.update.

  - Expose libvirt on_reboot in virt states.

  - Support transactional systems (MicroOS).

  - zypperpkg module ignores retcode 104 for search().
    (bsc#1159670)

  - Xen disk fixes. No longer generates volumes for Xen     disks, but the corresponding file or block disk.
    (bsc#1175987)

  - Invalidate file list cache when cache file modified time     is in the future. (bsc#1176397)

  - Prevent import errors when running test_btrfs unit tests

This update was imported from the SUSE:SLE-15-SP1:Update update project.

Update to CVE release 3001.3-1 for Python3 Includes fixes for CVE-2020-16846, CVE-2020-17490, CVE-2020-25592

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.

This update for salt fixes the following issues :

  - Properly validate eauth credentials and tokens on SSH     calls made by Salt API (bsc#1178319, bsc#1178362,     bsc#1178361, CVE-2020-25592, CVE-2020-17490,     CVE-2020-16846)

  - Fix disk.blkid to avoid unexpected keyword argument     '__pub_user'. (bsc#1177867)

  - Ensure virt.update stop_on_reboot is updated with its     default value.

  - Do not break package building for systemd OSes.

  - Drop wrong mock from chroot unit test.

  - Support systemd versions with dot. (bsc#1176294)

  - Fix for grains.test_core unit test.

  - Fix file/directory user and group ownership containing     UTF-8 characters. (bsc#1176024)

  - Several changes to virtualization :

  - Fix virt update when cpu and memory are changed.

  - Memory Tuning GSoC.

  - Properly fix memory setting regression in virt.update.

  - Expose libvirt on_reboot in virt states.

  - Support transactional systems (MicroOS).

  - zypperpkg module ignores retcode 104 for search().
    (bsc#1159670)

  - Xen disk fixes. No longer generates volumes for Xen     disks, but the corresponding file or block disk.
    (bsc#1175987)

  - Invalidate file list cache when cache file modified time     is in the future. (bsc#1176397)

  - Prevent import errors when running test_btrfs unit     tests.

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Update to CVE release 3002.1-1 for Python3 Includes fixes for CVE-2020-16846, CVE-2020-17490, CVE-2020-25592

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.

According to its self-reported version number, the instance of SaltStack hosted on the remote server is affected by multiple vulnerabilities:

  - eauth is not sufficiently validated when calling Salt SSH via the salt-api. Any value for 'eauth' or     'token' will allow a user to bypass authentication and make calls to Salt SSH. (CVE-2020-25592)

  - When using the functions create_ca, create_csr, and create_self_signed_cert in the tls execution module,     the generated keys will not be created with the correct permissions. (CVE-2020-17490)

  - A command injection vulnerability exists in Salt API. An unauthenticated, remote attacker can exploit this,     via the use of shell injections with the Salt API using the SSH Client, to execute arbitrary commands. (CVE-2020-16846)

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

ID	Name	Product	Family	Severity
205228	Ubuntu 16.04 LTS / 18.04 LTS : Salt vulnerabilities (USN-6948-1)	Nessus	Ubuntu Local Security Checks	critical
150580	SUSE SLES11 Security Update : SUSE Manager Client Tools (SUSE-SU-2020:14538-1)	Nessus	SuSE Local Security Checks	critical
146489	SaltStack Unauthenticated RCE (direct check)	Nessus	Web Servers	critical
145319	Debian DSA-4837-1 : salt - security update	Nessus	Debian Local Security Checks	critical
143874	SUSE SLED15 / SLES15 Security Update : salt (SUSE-SU-2020:3155-1)	Nessus	SuSE Local Security Checks	critical
143761	SUSE SLES15 Security Update : Salt (SUSE-SU-2020:3244-1)	Nessus	SuSE Local Security Checks	critical
143632	SUSE SLED15 / SLES15 Security Update : salt (SUSE-SU-2020:3243-1)	Nessus	SuSE Local Security Checks	critical
143512	Debian DLA-2480-2 : salt regression update	Nessus	Debian Local Security Checks	critical
142856	FreeBSD : salt -- multiple vulnerabilities (50259d8b-243e-11eb-8bae-b42e99975750)	Nessus	FreeBSD Local Security Checks	critical
142850	GLSA-202011-13 : Salt: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
142620	openSUSE Security Update : salt (openSUSE-2020-1868)	Nessus	SuSE Local Security Checks	critical
142552	Fedora 31 : salt (2020-9e040bd6dd)	Nessus	Fedora Local Security Checks	critical
142549	openSUSE Security Update : salt (openSUSE-2020-1833)	Nessus	SuSE Local Security Checks	critical
142541	Fedora 33 : salt (2020-5f08623da1)	Nessus	Fedora Local Security Checks	critical
142519	Fedora 32 : salt (2020-f9fa7892f2)	Nessus	Fedora Local Security Checks	critical
142489	SaltStack < 3002 Multiple Vulnerabilities	Nessus	Misc.	critical

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