ALT-PU-2017-2383-1

Package update xorg-server in branch sisyphus

Version1.19.4-alt1

Published2017-10-06

Max severityHIGH

Severity:

Closed issues (4)

HIGH8.8

In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by exploiting a stack overflow in the endianness conversion of X Events.

Published: 2017-07-06Modified: 2025-08-29

CVSS 2.0MEDIUM 6.5

CVSS:2.0/AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

MEDIUM6.5

Uninitialized data in endianness conversion in the XEvent handling of the X.Org X Server before 2017-06-19 allowed authenticated malicious users to access potentially privileged data from the X server.

Published: 2017-07-06Modified: 2025-08-29

CVSS 2.0MEDIUM 4.0

CVSS:2.0/AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

MEDIUM4.7

In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.

Published: 2017-10-10Modified: 2025-08-29

CVSS 2.0LOW 1.9

CVSS:2.0/AV:L/AC:M/Au:N/C:N/I:N/A:P

CVSS 3.xMEDIUM 4.7

CVSS:3.x/CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

HIGH7.8

In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp.

Published: 2017-10-10Modified: 2025-08-29

CVSS 2.0MEDIUM 4.6

CVSS:2.0/AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS 3.xHIGH 7.8

CVSS:3.x/CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References