CVE-2023-0049
vim: out-of-bounds read in function build_stl_str_hl
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 4, 2023
Updated · June 26, 2026
Description
A flaw was found in vim, which is vulnerable to an out-of-bounds read in the build_stl_str_hl function. This flaw allows a specially crafted file to cause information disclosure, data integrity corruption, or crash the software.
Statement
Red Hat Product Security has rated this issue as having a Low security impact, because the "victim" has to run an untrusted file IN SCRIPT MODE. Someone who is running untrusted files in script mode is equivalent to someone just taking a random python script and running it.
Since Red Hat Enterprise Linux 6, 7 are Out-of-Support-Scope for Low/Moderate flaws, the issue is not currently planned to be addressed in future updates for RHEL-6,7. Only Important and Critical severity flaws will be addressed at this time.
For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle & Updates Policy: https://access.redhat.com/support/policy/updates/errata/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Do not run vim with -s [scriptin] on untrusted scripts.
CVSS / CWE
CVSS 3.1 · 7.3CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-125 · Out-of-bounds Read