CVE-2023-3138
Vulnerability from cvelistv5
Published
2023-06-28 00:00
Modified
2024-08-02 06:48
Severity ?
Summary
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 indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-3138Third Party Advisory
secalert@redhat.comhttps://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/304a654a0d57bf0f00d8998185f0360332cfa36cPatch
secalert@redhat.comhttps://lists.x.org/archives/xorg-announce/2023-June/003406.htmlMailing List, Patch
secalert@redhat.comhttps://lists.x.org/archives/xorg-announce/2023-June/003407.htmlMailing List, Patch
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20231208-0008/
Impacted products
n/alibX11
Show details on NVD website

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