漏洞信息
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Vulnerability Title
Vim: Out-of-bounds Read in Terminal Screen Snapshot
Vulnerability Description
Vim is an open source, command line text editor. Prior to version 9.2.0565, the update_snapshot() function in src/terminal.c copies the visible terminal screen into the scrollback buffer when a snapshot is taken. For each screen cell it walks the cell's chars[] array with no upper bound, stopping only when it encounters a NUL terminator. When a cell legitimately fills all VTERM_MAX_CHARS_PER_CELL (6) slots — a base character plus five combining marks — the bundled libvterm returns the array without a terminating NUL, so the loop reads past the fixed six-element array and appends the out-of-bounds values to a buffer reserved for only six characters. A program whose output is rendered inside a :terminal window can trigger this with a short byte sequence and no Vim scripting, leading to a crash. This issue has been patched in version 9.2.0565.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Vulnerability Type
跨界内存读
Vulnerability Title
Vim 缓冲区错误漏洞
Vulnerability Description
Vim是Vim开源的一款跨平台的文本编辑器。 Vim 9.2.0565之前版本存在缓冲区错误漏洞,该漏洞源于update_snapshot()函数在复制可见终端屏幕到滚动缓冲区时,对每个屏幕单元的chars[]数组无上限遍历,当单元填满所有VTERM_MAX_CHARS_PER_CELL(6)个槽位时,libvterm返回无终止NUL的数组,导致越界读取并附加到仅保留6个字符的缓冲区,可能导致崩溃。
CVSS Information
N/A
Vulnerability Type
N/A