CVE-2024-14030

#!/usr/bin/perl use strict; use warnings; # This PoC demonstrates the usage of Sereal::Decoder with a vulnerable version. # It simulates handling a payload that could trigger the embedded zstd race condition. # CVE-2024-14030 / CVE-2019-11922 # Ensure you are running a vulnerable version (4.000 - 4.009_002) use Sereal::Decoder; my $decoder = Sereal::Decoder->new({ # Decoder options }); # Placeholder for a malicious payload designed to trigger the race condition. # The actual payload would need to be specifically crafted to exploit the zstd # out-of-bounds write when using a small output buffer. # In a real scenario, this byte string would be the result of reverse engineering # the trigger conditions for the race condition. my $malicious_payload = "<Sereal_Magic_Header_And_Malicious_Zstd_Block>"; print "[*] Attempting to decode payload with vulnerable Sereal::Decoder...\n"; eval { # The decode operation calls the vulnerable embedded zstd library $decoder->decode($malicious_payload, my $out); }; if ($@) { print "[!] Exception caught (Possible crash or corruption): $@\n"; } else { print "[*] Decoding completed. Vulnerability may require specific threading/buffer conditions.\n"; }

{"cve": {"id": "CVE-2024-14030", "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "published": "2026-03-31T12:16:26.153", "lastModified": "2026-04-13T14:07:54.600", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Sereal::Decoder versions from 4.000 through 4.009_002 for Perl embeds a vulnerable version of the Zstandard library.\n\nSereal::Decoder embeds a version of the Zstandard (zstd) library that is vulnerable to CVE-2019-11922. This is a race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:yves:sereal\\:\\:decoder:*:*:*:*:*:perl:*:*", "versionStartIncluding": "4.000", "versionEndExcluding": "4.010", "matchCriteriaId": "2A8D88D7-1129-4874-BDC7-5627BAB3CB74"}]}]}], "references": [{"url": "https://github.com/advisories/GHSA-w77f-wv46-4vcx", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Not Applicable"]}, {"url": "https://metacpan.org/release/YVES/Sereal-Decoder-4.010/changes", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Release Notes"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2019-11922", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Not Applicable"]}]}}