Products
Vim
- before 9.1.0678
Source
security-advisories@github.com
Tags
CVE-2024-43374 details
Last Modified : Aug. 16, 2024, 2:15 a.m.
Description
The UNIX editor Vim prior to version 9.1.0678 has a use-after-free error in argument list handling. When adding a new file to the argument list, this triggers `Buf*` autocommands. If in such an autocommand the buffer that was just opened is closed (including the window where it is shown), this causes the window structure to be freed which contains a reference to the argument list that we are actually modifying. Once the autocommands are completed, the references to the window and argument list are no longer valid and as such cause an use-after-free. Impact is low since the user must either intentionally add some unusual autocommands that wipe a buffer during creation (either manually or by sourcing a malicious plugin), but it will crash Vim. The issue has been fixed as of Vim patch v9.1.0678.
CVSS Score
| 1 | 2 | 3 | 4.5 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-416 | Use After Free | Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. |
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/0a6e57b09bc8c76691b367a5babfb79b31b770e8 | security-advisories@github.com |
| https://github.com/vim/vim/security/advisories/GHSA-2w8m-443v-cgvw | security-advisories@github.com |