CVE-2022-0368

Out-of-bounds Read in GitHub repository vim/vim prior to 8.2.

Out-of-bounds Read in GitHub repository vim/vim prior to 8.2.

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.(CVE-2022-0261)

Heap-based Buffer Overflow in vim/vim prior to 8.2.(CVE-2022-0318)

Access of Memory Location Before Start of Buffer in GitHub repository vim/vim prior to 8.2.(CVE-2022-0351)

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.(CVE-2022-0359)

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.(CVE-2022-0361)

Out-of-bounds Read in GitHub repository vim/vim prior to 8.2.(CVE-2022-0368)

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.(CVE-2022-0392)

Use After Free in GitHub repository vim/vim prior to 8.2.(CVE-2022-0413)

Stack-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.(CVE-2022-0408)

Use After Free in Conda vim prior to 8.2.(CVE-2022-0443)

Heap-based Buffer Overflow in Conda vim prior to 8.2.(CVE-2022-0417)

vim is vulnerable to Heap-based Buffer Overflow(CVE-2022-0213)

Out-of-bounds Read in GitHub repository vim/vim prior to 8.2.

• CVE-2022-0351: fix crash caused by too depth recursion
• CVE-2022-0359: fix illegal memory access with large tabstop in ex mode
• CVE-2022-0361: fix illegal memory access when copying lines in visual mode
• CVE-2022-0368: fix illegal memory access when undo makes visual area invalid

• CVE-2022-0351: fix crash caused by too depth recursion
• CVE-2022-0359: fix illegal memory access with large tabstop in ex mode
• CVE-2022-0361: fix illegal memory access when copying lines in visual mode
• CVE-2022-0368: fix illegal memory access when undo makes visual area invalid

• SECURITY UPDATE: Condition with many "(" causes a crash
  • debian/patches/CVE-2022-0351.patch: Limit recursion depth to 1000
  • CVE-2022-0351
• SECURITY UPDATE: Illegal memory access with large tabstop in Ex mode
  • debian/patches/CVE-2022-0359.patch: Allocate enough memory
  • CVE-2022-0359
• SECURITY UPDATE: Illegal memory access when copying lines in Visual mode
  • debian/patches/CVE-2022-0361.patch: Adjust the Visual position after copying lines
  • CVE-2022-0361
• SECURITY UPDATE: Illegal memory access when undo makes Visual area invalid
  • debian/patches/CVE-2022-0368.patch: Correct the Visual area after undo
  • CVE-2022-0368

• CVE-2021-3928: in suggest_trie_walk() only credit a non-word-char boundary with SCORE_NONWORD when preword is non-empty, so spell suggestions do not read uninitialized memory behind preword.
• CVE-2021-3974: in nfa_regmatch() NFA_MARK / NFA_MARK_GT / NFA_MARK_LT, save reginput - regline and re-fetch regline via reg_getline() after getmark_buf() so use-after-free cannot occur when getmark_buf flushes the current line.
• CVE-2022-0368: call check_pos(curbuf, &VIsual) at the end of u_undo_end() when Visual mode is active, so an undo that shortens the buffer cannot leave VIsual pointing past end-of-line / end- of-buffer. Adds a check_pos() helper in misc2.c.
• CVE-2022-0696: in win_new_tabpage() and goto_tabpage_tp(), refuse to switch/create a tabpage while cmdwin_type != 0, emitting e_cmdwin instead of crashing on cmdline-window re-entry.
• CVE-2022-1629: in find_next_quote(), after advancing past an escape character return -1 if the next byte is NUL so a trailing backslash cannot be read past end-of-line.
• CVE-2022-1735: call new check_visual_pos() helper from changed_common() (misc1.c) and stop_insert() (edit.c) whenever Visual mode is active so a change that shrinks the buffer cannot leave VIsual pointing past end-of-line / end-of-buffer.
• CVE-2022-1771: cap getcmdline() recursion at 50 via a static depth counter, emitting E169 "Command too recursive" on overflow to prevent crash from self-recursive cmdline input (e.g. the "=@" register loop).
• CVE-2022-1898: in nv_brackets(), copy the identifier under the cursor with vim_strnsave() before calling find_pattern_in_path() for "]d"/"[d", so that a match in a modified/freed line cannot cause a use-after-free on ptr.
• CVE-2022-1968: add get_line_and_copy() helper in search.c and use it instead of ml_get() in find_pattern_in_path(), so the regexp cannot leave line pointing into freed buffer memory when a mark invalidates the current line.
• CVE-2022-2124: in current_quote() (search.c), break out of the selection-scan loop when line[i] is NUL so a changed line does not cause a read past end-of-line while iterating up to col_end.

• CVE-2021-3928: in suggest_trie_walk() only credit a non-word-char boundary with SCORE_NONWORD when preword is non-empty, so spell suggestions do not read uninitialized memory behind preword.
• CVE-2021-3974: in nfa_regmatch() NFA_MARK / NFA_MARK_GT / NFA_MARK_LT, save reginput - regline and re-fetch regline via reg_getline() after getmark_buf() so use-after-free cannot occur when getmark_buf flushes the current line.
• CVE-2022-0368: call check_pos(curbuf, &VIsual) at the end of u_undo_end() when Visual mode is active, so an undo that shortens the buffer cannot leave VIsual pointing past end-of-line / end- of-buffer. Adds a check_pos() helper in misc2.c.
• CVE-2022-0696: in win_new_tabpage() and goto_tabpage_tp(), refuse to switch/create a tabpage while cmdwin_type != 0, emitting e_cmdwin instead of crashing on cmdline-window re-entry.
• CVE-2022-1629: in find_next_quote(), after advancing past an escape character return -1 if the next byte is NUL so a trailing backslash cannot be read past end-of-line.
• CVE-2022-1735: call new check_visual_pos() helper from changed_common() (misc1.c) and stop_insert() (edit.c) whenever Visual mode is active so a change that shrinks the buffer cannot leave VIsual pointing past end-of-line / end-of-buffer.
• CVE-2022-1771: cap getcmdline() recursion at 50 via a static depth counter, emitting E169 "Command too recursive" on overflow to prevent crash from self-recursive cmdline input (e.g. the "=@" register loop).
• CVE-2022-1898: in nv_brackets(), copy the identifier under the cursor with vim_strnsave() before calling find_pattern_in_path() for "]d"/"[d", so that a match in a modified/freed line cannot cause a use-after-free on ptr.
• CVE-2022-1968: add get_line_and_copy() helper in search.c and use it instead of ml_get() in find_pattern_in_path(), so the regexp cannot leave line pointing into freed buffer memory when a mark invalidates the current line.
• CVE-2022-2124: in current_quote() (search.c), break out of the selection-scan loop when line[i] is NUL so a changed line does not cause a read past end-of-line while iterating up to col_end.

• CVE-2022-0572: heap overflow on vcol-overflow in :retab (upstream vim 8.2.4359)
• CVE-2022-0368: illegal memory access when undo makes Visual area invalid (upstream vim 8.2.4217)
• CVE-2022-0685: crash on multi-byte char in unix_expandpath() (upstream vim 8.2.4418)
• CVE-2022-2125: heap overflow in get_lisp_indent() (upstream vim 8.2.5122)
• CVE-2022-2183: reading past end-of-line in lisp indenting (upstream vim 8.2.5151)
• CVE-2022-2124: reading past end-of-line in current_quote() (upstream vim 8.2.5120)
• CVE-2022-2344: heap overflow in ins_compl_add() (upstream vim 9.0.0046)
• CVE-2022-3256: use-after-free in movemark() when autocmd changes mark (upstream vim 9.0.0530)
• CVE-2023-4752: heap use-after-free in ins_compl_get_exp() (upstream vim 9.0.1858)
• CVE-2022-2126: spell-suggest read past bad word (upstream vim 8.2.5123)
• CVE-2022-2946: use-after-free in do_tag() when tagfunc invalidates tagstack (upstream vim 9.0.0246)
• CVE-2022-1720: OOB read in get_visual_text() (upstream vim 8.2.4956)
• CVE-2022-3234: OOB write in op_replace() (upstream vim 9.0.0483)
• CVE-2023-0433: same_leader() read past end-of-line on short comment line (upstream vim 9.0.1225)
• CVE-2023-4781: heap-buffer-overflow in vim_regsub_both() via nmatch underflow in :substitute, plus textlock guard in win_exchange() (upstream vim 9.0.1873)
• CVE-2022-0351: crash on deeply nested expression (upstream vim 8.2.4206)
• CVE-2022-2175: new_cmdpos leak across register insertion in getcmdline() (upstream vim 8.2.5148)
• CVE-2026-39881: netbeans command injection via crafted sign/highlight identifier + special-keys (upstream vim 9.2.0316)
• CVE-2021-4166: heap-buffer-overflow when clearing the argument list while it is being used (upstream vim 8.2.3884, with 8.2.2421 + 8.2.2463 prereqs for arglist_locked plumbing)
• CVE-2022-2343: heap-buffer-overflow in ins_compl_add_infercase() on long line with 'infercase' (upstream vim 9.0.0045)
• CVE-2022-3296: stack underflow in ex_finally / ex_endtry when :finally lacks an enclosing :try (upstream vim 9.0.0577)

These are all security issues fixed in the gvim-9.0.0453-2.1 package on the GA media of openSUSE Tumbleweed.

It was discovered that Vim was incorrectly handling virtual column position operations, which could result in an out-of-bounds read. An attacker could possibly use this issue to expose sensitive information. (CVE-2021-4193)

It was discovered that Vim was not properly performing bounds checks when updating windows present on a screen, which could result in a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0213)

It was discovered that Vim was incorrectly handling window exchanging operations when in Visual mode, which could result in an out-of-bounds read. An attacker could possibly use this issue to expose sensitive information. (CVE-2022-0319)

It was discovered that Vim was incorrectly handling recursion when parsing conditional expressions. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0351)

It was discovered that Vim was not properly handling memory allocation when processing data in Ex mode, which could result in a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0359)

It was discovered that Vim was not properly performing bounds checks when executing line operations in Visual mode, which could result in a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0361, CVE-2022-0368)

It was discovered that Vim was not properly handling loop conditions when looking for spell suggestions, which could result in a stack buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0408)

It was discovered that Vim was incorrectly handling memory access when executing buffer operations, which could result in the usage of freed memory. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-0443)

It was discovered that Vim was incorrectly processing Vim buffers. An
attacker could possibly use this issue to perform illegal memory access and expose sensitive information. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-4166)

It was discovered that Vim was using freed memory when dealing with regular expressions inside a visual selection. If a user were tricked into opening a specially crafted file, an attacker could crash the application, leading to a denial of service, or possibly achieve code execution with user privileges. This issue only affected Ubuntu 14.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-4192)

It was discovered that Vim was incorrectly handling virtual column position operations, which could result in an out-of-bounds read. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 14.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-4193)

It was discovered that Vim was not properly performing bounds checks when updating windows present on a screen, which could result in a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0213)

It was discovered that Vim was incorrectly performing read and write operations when in visual block mode, going beyond the end of a line and causing a heap buffer overflow. If a user were tricked into opening a specially crafted file, an attacker could crash the application, leading to a denial of service, or possibly achieve code execution with user privileges. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-0261, CVE-2022-0318)

It was discovered that Vim was incorrectly handling window exchanging operations when in Visual mode, which could result in an out-of-bounds read. An attacker could possibly use this issue to expose sensitive information. (CVE-2022-0319)

It was discovered that Vim was incorrectly handling recursion when parsing conditional expressions. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0351)

It was discovered that Vim was not properly handling memory allocation when processing data in Ex mode, which could result in a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0359)

It was discovered that Vim was not properly performing bounds checks when executing line operations in Visual mode, which could result in a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-0361, CVE-2022-0368)

It was discovered that Vim was not properly handling loop conditions when looking for spell suggestions, which could result in a stack buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0408)

It was discovered that Vim was incorrectly handling memory access when executing buffer operations, which could result in the usage of freed memory. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-0443)

It was discovered that Vim was incorrectly processing Vim buffers. An attacker could possibly use this issue to perform illegal memory access and expose sensitive information. (CVE-2022-0554)

It was discovered that Vim was not properly performing bounds checks for column numbers when replacing tabs with spaces or spaces with tabs, which could cause a heap buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2022-0572)

It was discovered that Vim was incorrectly processing Vim buffers. An attacker could possibly use this issue to perform illegal memory access and expose sensitive information. This issue only affected…