141 lines
5.8 KiB
JSON
141 lines
5.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-126048",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-11-10T16:53:12.633Z",
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"datePublished": "2026-11-10T16:58:03.611Z",
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"dateUpdated": "2026-11-10T16:58:03.611Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-11-10T16:58:03.611Z"
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},
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"datePublic": "2026-11-09T00:00:00.000Z",
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"title": "Gwenhywfar 4.99.8beta before 5.14.2 Stack Buffer Overflow via GWEN_TLV_Buffer_To_DB()",
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"descriptions": [
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{
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"lang": "en",
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"value": "Gwenhywfar 4.99.8beta before 5.14.2 contains a stack-based buffer overflow in GWEN_TLV_Buffer_To_DB() in src/parser/tlv.c when decoding BER-TLV tags into a fixed 128-byte buffer. Attackers can supply a record with about 127 or more tag continuation bytes or a truncated multi-byte tag, such as via a malicious chip card's EF_SSD file read by libchipcard's ZKA driver, to crash the application."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "Stack-based Buffer Overflow",
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"cweId": "CWE-121",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "Martin Preuss",
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"product": "Gwenhywfar",
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "4.99.8beta",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "5.14.2"
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}
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],
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"packageURL": "pkg:github/aqbanking/gwenhywfar",
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"repo": "https://github.com/aqbanking/gwenhywfar"
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"cvssV4_0": {
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"version": "4.0",
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"vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"attackVector": "PHYSICAL",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 5.1,
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"baseSeverity": "MEDIUM"
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}
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},
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"attackVector": "PHYSICAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 4.6,
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"baseSeverity": "MEDIUM"
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}
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}
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],
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"references": [
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{
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"url": "https://github.com/aqbanking/gwenhywfar/commit/ed8e2f8cdc27fd5c1b629cf9c1f6b93b2e009757",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://github.com/aqbanking/gwenhywfar/commit/6b50388e6b4a96f02d3d56e1d7747405fa881f39",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://www.aquamaniac.de/rdm/projects/gwenhywfar/files",
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"tags": [
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"product"
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]
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},
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{
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"url": "https://github.com/aqbanking/gwenhywfar/blob/424949d0c6e61028eaccd6e46e4c0c41931c2b2f/src/parser/tlv.c#L629-L655",
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"tags": [
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"technical-description"
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]
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},
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{
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"name": "VulnCheck Advisory: Gwenhywfar 4.99.8beta before 5.14.2 Stack Buffer Overflow via GWEN_TLV_Buffer_To_DB()",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/gwenhywfar-4.99-8beta-before-5.14.2-stack-buffer-overflow-via-gwen-tlv-buffer-to-db"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Deus Rex",
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"type": "finder"
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}
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],
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"x_generator": {
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"engine": "vulncheck-endgame"
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}
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}
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}
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} |