The version of xorg-server installed on the remote host is prior to 1.20.14 / 21.1.4 / 21.1.5 / 22.1.6. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2022-348-03 advisory.

  - A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a     dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName     requests.. This issue can lead to local privileges elevation on systems where the X server is running     privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-4283)

  - A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the     XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger     than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges     elevation on systems where the X server is running privileged and remote code execution for ssh X     forwarding sessions. This issue does not affect systems where client and server use the same byte order.
    (CVE-2022-46340)

  - A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIPassiveUngrab     request accesses out-of-bounds memory when invoked with a high keycode or button code. This issue can lead     to local privileges elevation on systems where the X server is running privileged and remote code     execution for ssh X forwarding sessions. (CVE-2022-46341)

  - A vulnerability was found in X.Org. This security flaw occurs because the handler for the     XvdiSelectVideoNotify request may write to memory after it has been freed. This issue can lead to local     privileges elevation on systems where the X se (CVE-2022-46342)

  - A vulnerability was found in X.Org. This security flaw occurs because the handler for the     ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local     privileges elevation on systems where the X server is running privileged and remote code execution for ssh     X forwarding sessions. (CVE-2022-46343)

  - A vulnerability was found in X.Org. This security flaw occurs because the handler for the XIChangeProperty     request has a length-validation issues, resulting in out-of-bounds memory reads and potential information     disclosure. This issue can lead to local privileges elevation on systems where the X server is running     privileged and remote code execution for ssh X forwarding sessions. (CVE-2022-46344)

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

Detections

Analytics

Slackware Linux 15.0 / current xorg-server Multiple Vulnerabilities (SSA:2022-348-03)

high Nessus Plugin ID 168742

Version 1.3

Version 1.2

Version 1.3 Dec 20, 2022, 1:54 PM CVSS metrics ("CVSSv2 score" changed from "3.6" to "9.0") CVSS metrics ("CVSSv2 vector" changed from "CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:P" to "CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C") CVSS metrics ("CVSSv3 score" changed from "7.2" to "8.8") CVSS metrics ("CVSSv3 vector" changed from "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H" to "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H") CVSSv2 severity (based on CVE-2022-46344, severity increased from "Low" to "High") CVSSv3 score source (set to "CVE-2022-46344") Plugin Feed: 202212201354
Version 1.2 Dec 15, 2022, 5:53 AM New Plugin Feed: 202212150553