CVE-2023-43617

Exp

An issue was discovered in Croc through 9.6.5. When a custom shared secret is used, the sender and receiver may divulge parts of this secret to an untrusted Relay, as part of composing a room name.

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-2023-43617 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.13%). 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-2023-43617

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-2023-43617

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 0.21% 0.13% -0.09%
2 2025-11-18 0.13% 0.21% +0.09%
3 2025-04-15 — 0.13% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-43617

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2023-43617

GitHub Security Advisory for CVE-2023-43617

GHSA-hp56-xvf4-g6wr · Severity: medium · Ecosystem: go — Cros secrets may be disclosed to untrusted relay

OS Trackers for CVE-2023-43617

vendor priority summary link
alpine medium CVE-2023-43617: 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-2023-43617

Affected software / configurations for CVE-2023-43617

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

References for CVE-2023-43617

URL Tags
http://www.openwall.com/lists/oss-security/2023/09/21/5 Mailing List
https://github.com/schollz/croc/issues/596 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