CVE-2023-43620

Exp

An issue was discovered in Croc through 9.6.5. A sender may place ANSI or CSI escape sequences in a filename to attack the terminal device of a receiver.

Published: 2023-09-20 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-43620 is rated Exploit Available (50.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.04%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-43620

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-43620

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.09% 0.04% -0.05%
2 2025-11-18 0.04% 0.09% +0.05%
3 2025-07-01 — 0.04% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-43620

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2023-43620

GitHub Security Advisory for CVE-2023-43620

GHSA-364c-vvqx-446c · Severity: high · Ecosystem: go — Croc sender may place ANSI or CSI escape sequences in filename to attach receiver's terminal device

OS Trackers for CVE-2023-43620

vendor priority summary link
alpine high CVE-2023-43620: 1 source package rows (croc); 9 state rows across 5 repos (3.18-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 6, open 3. https://security.alpinelinux.org/vuln/CVE-2023-43620

Affected software / configurations for CVE-2023-43620

Vendor Product Version Raw CPE
schollz croc <= 9.6.5 cpe:2.3:a:schollz:croc:*:*:*:*:*:*:*:*

References for CVE-2023-43620

URL Tags
http://www.openwall.com/lists/oss-security/2023/09/21/5 Mailing List
https://github.com/schollz/croc/issues/595 Exploit Issue Tracking Third Party Advisory
https://www.openwall.com/lists/oss-security/2023/09/08/2 Exploit Mailing List Third Party Advisory
cvelogic Threat Intelligence