158 lines
7.0 KiB
JSON
158 lines
7.0 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-2024-1544",
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"assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27",
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"state": "PUBLISHED",
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"assignerShortName": "wolfSSL",
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"dateReserved": "2024-02-15T17:38:16.603Z",
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"datePublished": "2024-08-27T18:44:52.770Z",
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"dateUpdated": "2026-01-27T21:58:42.146Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unknown",
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"product": "wolfSSL",
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"programFiles": [
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"wolfcrypt/src/ecc.c"
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],
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"vendor": "wolfSSL",
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"versions": [
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{
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"lessThanOrEqual": "5.6.4",
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"status": "affected",
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"version": "0",
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"versionType": "Release"
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}
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]
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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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"type": "finder",
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"user": "00000000-0000-4000-9000-000000000000",
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"value": "Florian Sieck, Luca Wilke and Thomas Eisenbarth from Universität zu Lübeck"
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}
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],
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"datePublic": "2024-07-08T17:30:00.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "Generating the ECDSA nonce k samples a random number r and then <br>truncates this randomness with a modular reduction mod n where n is the <br>order of the elliptic curve. Meaning k = r mod n. The division used <br>during the reduction estimates a factor q_e by dividing the upper two <br>digits (a digit having e.g. a size of 8 byte) of r by the upper digit of <br>n and then decrements q_e in a loop until it has the correct size. <br>Observing the number of times q_e is decremented through a control-flow <br>revealing side-channel reveals a bias in the most significant bits of <br>k. Depending on the curve this is either a negligible bias or a <br>significant bias large enough to reconstruct k with lattice reduction <br>methods. For SECP160R1, e.g., we find a bias of 15 bits."
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}
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],
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"value": "Generating the ECDSA nonce k samples a random number r and then \ntruncates this randomness with a modular reduction mod n where n is the \norder of the elliptic curve. Meaning k = r mod n. The division used \nduring the reduction estimates a factor q_e by dividing the upper two \ndigits (a digit having e.g. a size of 8 byte) of r by the upper digit of \nn and then decrements q_e in a loop until it has the correct size. \nObserving the number of times q_e is decremented through a control-flow \nrevealing side-channel reveals a bias in the most significant bits of \nk. Depending on the curve this is either a negligible bias or a \nsignificant bias large enough to reconstruct k with lattice reduction \nmethods. For SECP160R1, e.g., we find a bias of 15 bits."
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}
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],
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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "Information Disclosure"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "LOCAL",
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"availabilityImpact": "NONE",
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"baseScore": 4.1,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"privilegesRequired": "HIGH",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
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"version": "3.1"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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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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"cweId": "CWE-203",
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"description": "CWE-203 Observable Discrepancy",
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"lang": "en",
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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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"providerMetadata": {
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"orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27",
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"shortName": "wolfSSL",
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"dateUpdated": "2026-01-27T21:58:42.146Z"
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},
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"references": [
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{
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"url": "https://github.com/wolfSSL/wolfssl/releases/tag/v5.7.2-stable"
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},
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{
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"url": "https://github.com/wolfSSL/wolfssl/pull/7020"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "ECDSA nonce bias caused by truncation",
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"x_generator": {
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"engine": "Vulnogram 0.1.0-dev"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-08-27T19:14:00.889289Z",
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"id": "CVE-2024-1544",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-08-27T19:14:35.190Z"
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}
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}
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]
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}
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} |