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 f...
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
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.
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- BellSoft Alpaquita BELL-CVE-2023-3138
- Debian DEBIAN-CVE-2023-3138 libx11 修正版: 2:1.7.2-1+deb11u1
参照URL
- advisory github.com
- advisory nvd.nist.gov
- advisory security.netapp.com
- patch gitlab.freedesktop.org
- web access.redhat.com
- web lists.x.org
- web lists.x.org