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Freedesktop » Systemd : Security Vulnerabilities

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2017-1000082 20 2017-07-07 2017-07-22
10.0
Admin Remote Low Not required Complete Complete Complete
systemd v233 and earlier fails to safely parse usernames starting with a numeric digit (e.g. "0day"), running the service in question with root privileges rather than the user intended.
2 CVE-2018-15686 502 2018-10-26 2019-08-06
10.0
None Remote Low Not required Complete Complete Complete
A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected releases are systemd versions up to and including 239.
3 CVE-2015-7510 119 Overflow 2017-09-25 2017-10-06
7.5
None Remote Low Not required Partial Partial Partial
Stack-based buffer overflow in the getpwnam and getgrnam functions of the NSS module nss-mymachines in systemd.
4 CVE-2018-15688 119 Overflow 2018-10-26 2019-10-09
7.5
None Remote Low Not required Partial Partial Partial
A buffer overflow vulnerability in the dhcp6 client of systemd allows a malicious dhcp6 server to overwrite heap memory in systemd-networkd. Affected releases are systemd: versions up to and including 239.
5 CVE-2018-6954 2018-02-13 2019-10-02
7.2
None Local Low Not required Complete Complete Complete
systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.
6 CVE-2017-9217 20 DoS 2017-05-24 2017-06-06
5.0
None Remote Low Not required None None Partial
systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty question section.
7 CVE-2017-9445 787 2017-06-28 2017-07-06
5.0
None Remote Low Not required None None Partial
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.
8 CVE-2017-15908 835 2017-10-26 2019-10-02
5.0
None Remote Low Not required None None Partial
In systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in the dns_packet_read_type_window() function of the 'systemd-resolved' service and cause a DoS of the affected service.
9 CVE-2018-20839 255 2019-05-17 2019-05-30
5.0
None Remote Low Not required Partial None None
systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.
10 CVE-2019-6454 119 DoS Overflow 2019-03-21 2019-06-04
4.9
None Local Low Not required None None Complete
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
11 CVE-2017-18078 59 Bypass 2018-01-29 2019-10-02
4.6
None Local Low Not required Partial Partial Partial
systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.
12 CVE-2018-16864 119 Overflow 2019-01-11 2019-08-07
4.6
None Local Low Not required Partial Partial Partial
An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when a program with long command line arguments calls syslog. A local attacker may use this flaw to crash systemd-journald or escalate his privileges. Versions through v240 are vulnerable.
13 CVE-2018-16865 119 Exec Code Overflow 2019-01-11 2019-08-07
4.6
None Local Low Not required Partial Partial Partial
An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when many entries are sent to the journal socket. A local attacker, or a remote one if systemd-journal-remote is used, may use this flaw to crash systemd-journald or execute code with journald privileges. Versions through v240 are vulnerable.
14 CVE-2019-3843 264 2019-04-26 2019-06-19
4.6
None Local Low Not required Partial Partial Partial
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.
15 CVE-2019-3844 264 2019-04-26 2019-06-19
4.6
None Local Low Not required Partial Partial Partial
It was discovered that a systemd service that uses DynamicUser property can get new privileges through the execution of SUID binaries, which would allow to create binaries owned by the service transient group with the setgid bit set. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the GID will be recycled.
16 CVE-2018-1049 362 DoS 2018-02-16 2019-10-09
4.3
None Remote Medium Not required None None Partial
In systemd prior to 234 a race condition exists between .mount and .automount units such that automount requests from kernel may not be serviced by systemd resulting in kernel holding the mountpoint and any processes that try to use said mount will hang. A race condition like this may lead to denial of service, until mount points are unmounted.
17 CVE-2018-16866 125 2019-01-11 2019-05-13
2.1
None Local Low Not required Partial None None
An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable.
18 CVE-2019-15718 284 2019-09-04 2019-09-19
2.1
None Local Low Not required None Partial None
In systemd 240, bus_open_system_watch_bind_with_description in shared/bus-util.c (as used by systemd-resolved to connect to the system D-Bus instance), calls sd_bus_set_trusted, which disables access controls for incoming D-Bus messages. An unprivileged user can exploit this by executing D-Bus methods that should be restricted to privileged users, in order to change the system's DNS resolver settings.
19 CVE-2018-15687 362 2018-10-26 2019-10-09
1.9
None Local Medium Not required None Partial None
A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.
20 CVE-2018-16888 20 2019-01-14 2019-10-02
1.9
None Local Medium Not required None None Partial
It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged processes. Versions before v237 are vulnerable.
Total number of vulnerabilities : 20   Page : 1 (This Page)
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