CVE-2024-38440

{"id": "CVE-2024-38440", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2024-06-16T13:15:53.147", "references": [{"url": "https://github.com/Netatalk/netatalk/blob/90d91a9ac9a7d6132ab7620d31c8c23400949206/etc/uams/uams_dhx_pam.c#L199-L200", "tags": ["Product"], "source": "[email protected]"}, {"url": "https://github.com/Netatalk/netatalk/issues/1097", "tags": ["Not Applicable"], "source": "[email protected]"}, {"url": "https://github.com/Netatalk/netatalk/security/advisories/GHSA-mxx4-9fhm-r3w5", "tags": ["Exploit", "Vendor Advisory"], "source": "[email protected]"}, {"url": "https://netatalk.io/security/CVE-2024-38440", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://github.com/Netatalk/netatalk/blob/90d91a9ac9a7d6132ab7620d31c8c23400949206/etc/uams/uams_dhx_pam.c#L199-L200", "tags": ["Product"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/Netatalk/netatalk/issues/1097", "tags": ["Not Applicable"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/Netatalk/netatalk/security/advisories/GHSA-mxx4-9fhm-r3w5", "tags": ["Exploit", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00026.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://netatalk.io/security/CVE-2024-38440", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-193"}]}], "descriptions": [{"lang": "en", "value": "Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow and segmentation violation, because of incorrectly using FPLoginExt in BN_bin2bn in etc/uams/uams_dhx_pam.c. The original issue 1097 report stated: 'The latest version of Netatalk (v3.2.0) contains a security vulnerability. This vulnerability arises due to a lack of validation for the length field after parsing user-provided data, leading to an out-of-bounds heap write of one byte (\\0). Under specific configurations, this can result in reading metadata of the next heap block, potentially causing a Denial of Service (DoS) under certain heap layouts or with ASAN enabled. ... The vulnerability is located in the FPLoginExt operation of Netatalk, in the BN_bin2bn function found in /etc/uams/uams_dhx_pam.c ... if (!(bn = BN_bin2bn((unsigned char *)ibuf, KEYSIZE, NULL))) ... threads ... [#0] Id 1, Name: \"afpd\", stopped 0x7ffff4304e58 in ?? (), reason: SIGSEGV ... [#0] 0x7ffff4304e58 mov BYTE PTR [r14+0x8], 0x0 ... mov rdx, QWORD PTR [rsp+0x18] ... afp_login_ext(obj=<optimized out>, ibuf=0x62d000010424 \"\", ibuflen=0xffffffffffff0015, rbuf=<optimized out>, rbuflen=<optimized out>) ... afp_over_dsi(obj=0x5555556154c0 <obj>).' 2.4.1 and 3.1.19 are also fixed versions."}, {"lang": "es", "value": "Netatalk 3.2.0 tiene un error uno por uno y el resultado es un desbordamiento del b\u00fafer basado en el mont\u00f3n debido al uso incorrecto de FPLoginExt en BN_bin2bn en etc/uams/uams_dhx_pam.c."}], "lastModified": "2025-11-03T22:17:01.293", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C3F4245E-9F2F-485B-BF45-D12C4880C133", "versionEndExcluding": "2.4.1", "versionStartIncluding": "2.0.0"}, {"criteria": "cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC79D241-5B4D-4430-9F44-5F138836EBD6", "versionEndExcluding": "3.1.19", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:a:netatalk:netatalk:3.2.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "252F610A-8297-4142-BD3C-45BEF57E33AB"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}