Vulnerability in Vim is an improved (CVE-2023-46246)
Summary
Vulnerability in Vim is an improved (CVE-2023-46246). Risk of unauthorized operations or information disclosure. Exploitable via ga_grow_inner.
Original description
The description as published by the source.
Vim is an improved version of the good old UNIX editor Vi. Heap-use-after-free in memory allocated in the function ga_grow_inner in in the file src/alloc.c at line 748, which is freed in the file src/ex_docmd.c in the function do_cmdline at line 1010 and then used again in src/cmdhist.c at line 759. When using the :history command, it's possible that the provided argument overflows the accepted value. Causing an Integer Overflow and potentially later an use-after-free. This vulnerability has been patched in version 9.0.2068.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2023-46246 has been found in Vim is an improved.
Attackers can target a specific entry point like ga_grow_inner over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.0/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Vim is an improved CVE-2023-46246" on the vendor's site.
CVE-2023-46246 (Vim is an improved) — CWE-190 / CVSS v3 4.0
Attack vector: local / unauthenticated / no user interaction
Attack surface: ga_grow_inner / do_cmdline
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-190) exists in Vim is an improved. Attackers reach the vulnerable code path via ga_grow_inner without authentication.
Check the vendor advisory for the affected versions of Vim is an improved. Attack surface: ga_grow_inner / do_cmdline.
Severity: Medium (CVSS 4.0/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Vim is an improved を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2023-46246 vim
References
- exploit github.com
- patch github.com
- web lists.fedoraproject.org
- web lists.fedoraproject.org
- web security.netapp.com