CVE-2023-48232

Vim is an open source command line text editor. A floating point exception may occur when calculating the line offset for overlong lines and smooth scrolling is enabled and the cpo-settings include the 'n' flag. This may happen when a window border is present and when the wrapped line continues on the next physical line directly in the window border because the 'cpo' setting includes the 'n' flag. Only users with non-default settings are affected and the exception should only result in a crash. This issue has been addressed in commit cb0b99f0 which has been included in release version 9.0.2107. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Root has patched CVE-2023-48232 in the vim package for Root:Alpine:3.18. Multiple fixed versions available.

The updated packages fix security vulnerabilities

When closing a window, vim may try to access already freed window structure. Exploitation beyond crashing the application has not been shown to be viable. (CVE-2023-48231)

A floating point exception may occur when calculating the line offset for overlong lines and smooth scrolling is enabled and the cpo-settings include the 'n' flag. This may happen when a window border is present and when the wrapped line continues on the next physical line directly in the window border because the 'cpo' setting includes the 'n' flag. Only users with non-default settings are affected and the exception should only result in a crash. (CVE-2023-48232)

If the count after the :s command is larger than what fits into a (signed) long variable, abort with e_value_too_large. Impact is low, user interaction is required and a crash may not even happen in all situations. (CVE-2023-48233)

When getting the count for a normal mode z command, it may overflow for large counts given. Impact is low, user interaction is required and a crash may not even happen in all situations. (CVE-2023-48234)

When parsing relative ex addresses one may unintentionally cause an overflow. Ironically this happens in the existing overflow check, because the line number becomes negative and LONG_MAX - lnum will cause the overflow. Impact is low, user interaction is required and a crash may not even happen in all situations. (CVE-2023-48235)

When using the z= command, the user may overflow the count with values larger than MAX_INT. Impact is low, user interaction is required and a crash may not even happen in all situations. (CVE-2023-48236)

In affected versions when shifting lines in operator pending mode and using a very large value, it may be possible to overflow the size of integer. Impact is low, user interaction is required and a crash may not even happen in all situations. (CVE-2023-48237)

When executing a :s command for the very first time and using a sub-replace-special atom inside the substitution part, it is possible that the recursive :s call causes free-ing of memory which may later then be accessed by the initial :s command. The user must intentionally execute the payload and the whole process is a bit tricky to do since it seems to work only reliably for the very first :s command. It may also cause a crash of Vim. (CVE-2023-48706)

The update fixes haproxy configuration paths used for syntax coloration.

This update for vim fixes the following issues:

• CVE-2023-48231: Fixed Use-After-Free in win_close() (bsc#1217316).
• CVE-2023-48232: Fixed Floating point Exception in adjust_plines_for_skipcol() (bsc#1217320).
• CVE-2023-48233: Fixed overflow with count for :s command (bsc#1217321).
• CVE-2023-48234: Fixed overflow in nv_z_get_count (bsc#1217324).
• CVE-2023-48235: Fixed overflow in ex address parsing (bsc#1217326).
• CVE-2023-48236: Fixed overflow in get_number (bsc#1217329).
• CVE-2023-48237: Fixed overflow in shift_line (bsc#1217330).
• CVE-2023-48706: Fixed heap-use-after-free in ex_substitute (bsc#1217432).
• CVE-2024-22667: Fixed stack-based buffer overflow in did_set_langmap function in map.c (bsc#1219581).
• CVE-2023-4750: Fixed heap use-after-free in function bt_quickfix (bsc#1215005).

Updated to version 9.1 with patch level 0111: https://github.com/vim/vim/compare/v9.0.2103...v9.1.0111

This update for vim fixes the following issues:

• CVE-2023-48231: Fixed Use-After-Free in win_close() (bsc#1217316).
• CVE-2023-48232: Fixed Floating point Exception in adjust_plines_for_skipcol() (bsc#1217320).
• CVE-2023-48233: Fixed overflow with count for :s command (bsc#1217321).
• CVE-2023-48234: Fixed overflow in nv_z_get_count (bsc#1217324).
• CVE-2023-48235: Fixed overflow in ex address parsing (bsc#1217326).
• CVE-2023-48236: Fixed overflow in get_number (bsc#1217329).
• CVE-2023-48237: Fixed overflow in shift_line (bsc#1217330).
• CVE-2023-48706: Fixed heap-use-after-free in ex_substitute (bsc#1217432).
• CVE-2024-22667: Fixed stack-based buffer overflow in did_set_langmap function in map.c (bsc#1219581).
• CVE-2023-4750: Fixed heap use-after-free in function bt_quickfix (bsc#1215005).

Updated to version 9.1 with patch level 0111: https://github.com/vim/vim/compare/v9.0.2103...v9.1.0111

This update for vim fixes the following issues:

Updated to version 9.1.0111, fixes the following security problems

• CVE-2023-48231: Use-After-Free in win_close() (bsc#1217316).
• CVE-2023-48232: Floating point Exception in adjust_plines_for_skipcol() (bsc#1217320).
• CVE-2023-48233: overflow with count for :s command (bsc#1217321).
• CVE-2023-48234: overflow in nv_z_get_count (bsc#1217324).
• CVE-2023-48235: overflow in ex address parsing (CVE-2023-48235).
• CVE-2023-48236: overflow in get_number (bsc#1217329).
• CVE-2023-48237: overflow in shift_line (bsc#1217330).
• CVE-2023-48706: heap-use-after-free in ex_substitute (bsc#1217432).
• CVE-2024-22667: stack-based buffer overflow in did_set_langmap function in map.c (bsc#1219581).
• CVE-2023-4750: Heap use-after-free in function bt_quickfix (bsc#1215005).