Products
Vim
- 9.1.0689
Source
security-advisories@github.com
Tags
CVE-2024-43790 details
Last Modified : Aug. 22, 2024, 10:15 p.m.
Description
Vim is an open source command line text editor. When performing a search and displaying the search-count message is disabled (:set shm+=S), the search pattern is displayed at the bottom of the screen in a buffer (msgbuf). When right-left mode (:set rl) is enabled, the search pattern is reversed. This happens by allocating a new buffer. If the search pattern contains some ASCII NUL characters, the buffer allocated will be smaller than the original allocated buffer (because for allocating the reversed buffer, the strlen() function is called, which only counts until it notices an ASCII NUL byte ) and thus the original length indicator is wrong. This causes an overflow when accessing characters inside the msgbuf by the previously (now wrong) length of the msgbuf. The issue has been fixed as of Vim patch v9.1.0689.
CVSS Score
| 1 | 2 | 3 | 4.5 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
CVSS Data
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Base Score
4.5
Exploitability Score
1.0
Impact Score
3.4
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
References
| URL | Source |
|---|---|
| https://github.com/vim/vim/commit/cacb6693c10bb19f28a50eca47bc | security-advisories@github.com |
| https://github.com/vim/vim/security/advisories/GHSA-v2x2-cjcg-f9jm | security-advisories@github.com |