The version of systemd installed on the remote host is prior to 219-78. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1854 advisory.

  - In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment     before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to     set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using     the allow_active element rather than allow_any. (CVE-2019-3842)

  - An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW     packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An     attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server. (CVE-2020-13529)

  - systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed     by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were     intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082. (CVE-2020-13776)

  - A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function     and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for     the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream     object, causing the use-after-free when the reference is still used later. (CVE-2022-2526)

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

Detections

Analytics

Amazon Linux 2 : systemd (ALAS-2022-1854)

critical Nessus Plugin ID 165993

Version 1.3