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x.org x server vulnerabilities and exploits
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7.8
CVSSv3
CVE-2019-17624
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly have unspecified other impact. Note: It is disputed ...
X.org X Server
1 EDB exploit
7.8
CVSSv3
CVE-2017-13723
In X.Org Server (aka xserver and xorg-server) prior to 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 xkb...
X.org Xorg-server
Debian Debian Linux 8.0
Debian Debian Linux 9.0
7.5
CVSSv3
CVE-2023-6478
A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.
X.org X Server
X.org Xwayland
Redhat Enterprise Linux Eus 9.2
Debian Debian Linux 10.0
Debian Debian Linux 11.0
Debian Debian Linux 12.0
Tigervnc Tigervnc -
7.5
CVSSv3
CVE-2023-3138
A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array in...
X.org Libx11
Redhat Enterprise Linux 8.0
Redhat Enterprise Linux 9.0
1 Github repository
7.5
CVSSv3
CVE-2018-14598
An issue exists in XListExtensions in ListExt.c in libX11 up to and including 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).
X.org Libx11
Debian Debian Linux 8.0
Canonical Ubuntu Linux 16.04
Canonical Ubuntu Linux 14.04
Canonical Ubuntu Linux 12.04
Canonical Ubuntu Linux 18.04
Fedoraproject Fedora 28
7.1
CVSSv3
CVE-2017-13722
In the pcfGetProperties function in bitmap/pcfread.c in libXfont up to and including 1.5.2 and 2.x prior to 2.0.2, a missing boundary check (for PCF files) could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash o...
X.org Libxfont 2.0.0
X.org Libxfont 2.0.1
X.org Libxfont
7
CVSSv3
CVE-2023-5574
A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-f...
X.org X Server
Redhat Enterprise Linux 7.0
7
CVSSv3
CVE-2020-25697
A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an malicious user to take control of an X application by impersonating the server it is expecting to connect to.
X.org X Server -
7
CVSSv3
CVE-2017-2624
It was found that xorg-x11-server prior to 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...
X.org Xorg-server
Debian Debian Linux 7.0
6.5
CVSSv3
CVE-2022-3551
A vulnerability, which was classified as problematic, has been found in X.org Server. Affected by this issue is the function ProcXkbGetKbdByName of the file xkb/xkb.c. The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. The identifier of t...
X.org X Server
Debian Debian Linux 10.0
Debian Debian Linux 11.0
Fedoraproject Fedora 35
Fedoraproject Fedora 36
Fedoraproject Fedora 37
CVSSv3
CVSSv2
CVSSv3
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