CVE-2024-45306 heap-buffer-overflow in Vim

2024-09-0216:35:17

CWE-122

GitHub_M

www.cve.org

vim

heap-buffer-overflow

patch v9.1.0707

cursor position

buffer-overflow

program crash

CVSS3

4.5

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS

Percentile

16.3%

JSON

Vim is an open source, command line text editor. Patch v9.1.0038 optimized how the cursor position is calculated and removed a loop, that verified that the cursor position always points inside a line and does not become invalid by pointing beyond the end of
a line. Back then we assumed this loop is unnecessary. However, this change made it possible that the cursor position stays invalid and points beyond the end of a line, which would eventually cause a heap-buffer-overflow when trying to access the line pointer at
the specified cursor position. It’s not quite clear yet, what can lead to this situation that the cursor points to an invalid position. That’s why patch v9.1.0707 does not include a test case. The only observed impact has been a program crash. This issue has been addressed in with the patch v9.1.0707. All users are advised to upgrade.

CNA Affected

[
  {
    "vendor": "vim",
    "product": "vim",
    "versions": [
      {
        "version": ">= 9.1.0038, < 9.1.0707",
        "status": "affected"
      }
    ]
  }
]