It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.
Max CVSS
7.0
EPSS Score
0.15%
Published
2018-07-27
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing extra length validation in ProcEstablishConnection function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.79%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was vulnerable to integer overflow in ProcDbeGetVisualInfo function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
1.15%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.83%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing length validation in XFree86 VidModeExtension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.79%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing length validation in XFree86 DRI extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.79%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing length validation in XFIXES extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.79%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing length validation in XINERAMA extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.38%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing length validation in MIT-SCREEN-SAVER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.38%
Published
2018-01-24
Updated
2019-10-09
xorg-x11-server before 1.19.5 was missing length validation in RENDER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Max CVSS
9.8
EPSS Score
0.55%
Published
2018-01-24
Updated
2019-10-09
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.
Max CVSS
7.8
EPSS Score
0.04%
Published
2017-10-10
Updated
2018-02-04
This web site uses cookies for managing your session, storing preferences, website analytics and additional purposes described in our privacy policy.
By using this web site you are agreeing to CVEdetails.com terms of use!