In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.

According to the version of the systemd packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - In systemd through 233, certain sizes passed to     dns_packet_new in systemd-resolved can cause it to     allocate a buffer that's too small. A malicious DNS     server can exploit this via a response with a specially     crafted TCP payload to trick systemd-resolved into     allocating a buffer that's too small, and subsequently     write arbitrary data beyond the end of     it.(CVE-2017-9445)

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 version of the systemd packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - An out-of-bounds write flaw was found in the way     systemd-resolved daemon handled processing of DNS     responses. A remote attacker could potentially use this     flaw to crash the daemon or execute arbitrary code in     the context of the daemon process.i1/4^CVE-2017-9445i1/4%0

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 version of the systemd packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - In systemd through 233, certain sizes passed to     dns_packet_new in systemd-resolved can cause it to     allocate a buffer that's too small. A malicious DNS     server can exploit this via a response with a specially     crafted TCP payload to trick systemd-resolved into     allocating a buffer that's too small, and subsequently     write arbitrary data beyond the end of     it.(CVE-2017-9445)

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 systemd packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - systemd: Out-of-bounds heap write in systemd-networkd     dhcpv6 option handling (CVE-2018-15688)

  - systemd: stack overflow when calling syslog from a     command with long cmdline (CVE-2018-16864)

  - systemd: stack overflow when receiving many journald     entries (CVE-2018-16865)

  - systemd: Assertion failure when PID 1 receives a     zero-length message over notify socket(CVE-2016-7795)

  - systemd: Unsafe handling of hard links allowing     privilege escalation(CVE-2017-18078)

  - systemd: Out-of-bounds write in systemd-resolved due to     allocating too small buffer in     dns_packet_new(CVE-2017-9445)

  - systemd: memory leak in journald-server.c introduced by     fix for CVE-2018-16864 (CVE-2019-3815)

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.

An update of the systemd package has been released.

This update for systemd provides several fixes and enhancements.
Security issues fixed :

  - CVE-2017-9217: NULL pointer dereferencing that could     lead to resolved aborting. (bsc#1040614)

  - CVE-2017-9445: Possible out-of-bounds write triggered by     a specially crafted TCP payload from a DNS server.
    (bsc#1045290) The update also fixed several non-security     bugs :

  - core/mount: Use the '-c' flag to not canonicalize paths     when calling /bin/umount

  - automount: Handle expire_tokens when the mount unit     changes its state (bsc#1040942)

  - automount: Rework propagation between automount and     mount units

  - build: Make sure tmpfiles.d/systemd-remote.conf get     installed when necessary

  - build: Fix systemd-journal-upload installation

  - basic: Detect XEN Dom0 as no virtualization     (bsc#1036873)

  - virt: Make sure some errors are not ignored

  - fstab-generator: Do not skip Before= ordering for noauto     mountpoints

  - fstab-gen: Do not convert device timeout into seconds     when initializing JobTimeoutSec

  - core/device: Use JobRunningTimeoutSec= for device units     (bsc#1004995)

  - fstab-generator: Apply the _netdev option also to device     units (bsc#1004995)

  - job: Add JobRunningTimeoutSec for JOB_RUNNING state     (bsc#1004995)

  - job: Ensure JobRunningTimeoutSec= survives serialization     (bsc#1004995)

  - rules: Export NVMe WWID udev attribute (bsc#1038865)

  - rules: Introduce disk/by-id (model_serial) symbolic     links for NVMe drives

  - rules: Add rules for NVMe devices

  - sysusers: Make group shadow support configurable     (bsc#1029516)

  - core: When deserializing a unit, fully restore its     cgroup state (bsc#1029102)

  - core: Introduce     cg_mask_from_string()/cg_mask_to_string()

  - core:execute: Fix handling failures of calling fork() in     exec_spawn() (bsc#1040258)

  - Fix systemd-sysv-convert when a package starts shipping     service units (bsc#982303) The database might be missing     when upgrading a package which was shipping no sysv init     scripts nor unit files (at the time

    --save was called) but the new version start shipping     unit files.

  - Disable group shadow support (bsc#1029516)

  - Only check signature job error if signature job exists     (bsc#1043758)

  - Automounter issue in combination with NFS volumes     (bsc#1040968)

  - Missing symbolic link for SAS device in     /dev/disk/by-path (bsc#1040153)

  - Add minimal support for boot.d/* scripts in     systemd-sysv-convert (bsc#1046750)

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 systemd and dracut fixes the following issues:
Security issues fixed :

  - CVE-2017-9445: Possible out-of-bounds write triggered by     a specially crafted TCP payload from a DNS server.
    (bsc#1045290) Non-security issues fixed in systemd :

  - Automounter issue in combination with NFS volumes     (bsc#1040968)

  - Missing symbolic link for SAS device in     /dev/disk/by-path (bsc#1040153)

  - Add minimal support for boot.d/* scripts in     systemd-sysv-convert (bsc#1046750) Non-security issues     fixed in dracut :

  - Bail out if module directory does not exist.
    (bsc#1043900)

  - Suppress bogus error message. (bsc#1032029)

  - Fix module force loading with systemd. (bsc#986216)

  - Ship udev files required by systemd. (bsc#1040153)

  - Ignore module resolution errors (e.g. with kgraft).
    (bsc#1037120)

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.

A fix for an out-of-bounds write in systemd-resolved after a crafted DNS packet (CVE-2017-9445).

No need to reboot or log out.

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.

An out-of-bounds write was discovered in systemd-resolved when handling specially crafted DNS responses. A remote attacker could potentially exploit this to cause a denial of service (daemon crash) or execute arbitrary code. (CVE-2017-9445).

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

ID	Name	Product	Family	Severity
149181	EulerOS 2.0 SP3 : systemd (EulerOS-SA-2021-1853)	Nessus	Huawei Local Security Checks	high
123902	EulerOS Virtualization 2.5.4 : systemd (EulerOS-SA-2019-1216)	Nessus	Huawei Local Security Checks	high
123881	EulerOS Virtualization 2.5.3 : systemd (EulerOS-SA-2019-1195)	Nessus	Huawei Local Security Checks	high
122459	EulerOS Virtualization 2.5.2 : systemd (EulerOS-SA-2019-1063)	Nessus	Huawei Local Security Checks	high
122218	EulerOS 2.0 SP5 : systemd (EulerOS-SA-2019-1045)	Nessus	Huawei Local Security Checks	high
121709	Photon OS 1.0: Systemd PHSA-2017-0023	Nessus	PhotonOS Local Security Checks	high
102188	SUSE SLED12 / SLES12 Security Update : systemd (SUSE-SU-2017:2031-1)	Nessus	SuSE Local Security Checks	high
101831	SUSE SLED12 / SLES12 Security Update : systemd, dracut (SUSE-SU-2017:1898-1)	Nessus	SuSE Local Security Checks	high
101684	Fedora 26 : systemd (2017-956e27bdd6)	Nessus	Fedora Local Security Checks	high
101182	Fedora 24 : systemd (2017-72f0c1ea9c)	Nessus	Fedora Local Security Checks	high
101122	Fedora 25 : systemd (2017-29d909f5ec)	Nessus	Fedora Local Security Checks	high
101083	Ubuntu 16.10 / 17.04 : systemd vulnerability (USN-3341-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2017-9445

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Tenable Plugins

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