In the Bouncy Castle JCE Provider version 1.55 and earlier ECDSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure.
{ "vanir_signatures": [ { "digest": { "line_hashes": [ "257425269983222656219842717844715799170", "26163569507345588708699232633355024666", "225570389164221845432034441669936621194", "180875236743972398055858563081505182187" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-249f616d", "target": { "file": "core/src/main/java/org/bouncycastle/asn1/ASN1Integer.java" } }, { "digest": { "line_hashes": [ "215219807747928108828833443599509753831", "137041855321333326620864517687760704463", "312146796212084741363458877722545616664", "333414212967175228106611218747642255707" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-46405252", "target": { "file": "core/src/main/java/org/bouncycastle/asn1/ASN1Enumerated.java" } }, { "digest": { "function_hash": "220933315659328942017981122338364204839", "length": 1059.0 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Function", "id": "CVE-2016-1000342-6a71e645", "target": { "function": "performTest", "file": "core/src/test/java/org/bouncycastle/asn1/test/MiscTest.java" } }, { "digest": { "function_hash": "278734910691241586643841700662906844285", "length": 312.0 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Function", "id": "CVE-2016-1000342-748b62ce", "target": { "function": "decode", "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/ec/SignatureSpi.java" } }, { "digest": { "function_hash": "166629354532108070822167463130104286425", "length": 219.0 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Function", "id": "CVE-2016-1000342-8e601e0e", "target": { "function": "performTest", "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/ECDSA5Test.java" } }, { "digest": { "line_hashes": [ "319832358133027760288406488179077845721", "161554379034724302030412672270464084874", "135866590029664887321722074693148922208", "282554236972122305574605806433117152527", "98617986319438485454557457878854810841", "15230371495072646291502884156367326882", "109391545642665904104121926837062339161", "329942142184009405323326196099659975311", "119261302162161531581944348082986241849", "176395810663714459922131484924591176350", "45882598256556373638042035379670621227", "173954566142468940627506458882626977811" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-907612d2", "target": { "file": "core/src/test/java/org/bouncycastle/asn1/test/MiscTest.java" } }, { "digest": { "function_hash": "100393218655753613535427303270331315545", "length": 316.0 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Function", "id": "CVE-2016-1000342-93adda44", "target": { "function": "derDecode", "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/DSASigner.java" } }, { "digest": { "function_hash": "212919764925938076734138100248791307244", "length": 73.0 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Function", "id": "CVE-2016-1000342-a0313d0b", "target": { "function": "ASN1Enumerated", "file": "core/src/main/java/org/bouncycastle/asn1/ASN1Enumerated.java" } }, { "digest": { "function_hash": "87277759174644206792808356571638029592", "length": 113.0 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Function", "id": "CVE-2016-1000342-c4efb6b8", "target": { "function": "ASN1Integer", "file": "core/src/main/java/org/bouncycastle/asn1/ASN1Integer.java" } }, { "digest": { "line_hashes": [ "51575529188658924818262151907613048932", "53804009320531330339798477897393208475", "116766493604351544922730511529458697490", "296219117245715262958522001024846181724", "260037792847250757838585266527247876251", "106023638279590469487116763667129695452", "216554689925364997874886150330321602023", "79174272103476305712229887461463509162" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-c55c799d", "target": { "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/DSASigner.java" } }, { "digest": { "line_hashes": [ "24550506322454198274180104319250219573", "10870921454543669044138594081539810575", "137058703302594774882029851823261879650", "109219649528369884105762375967863617225", "12542597924490212169347186152649989443", "250225563269739024776859862032011025272", "162611985868095469436374288174448598731", "301298247282705924415091856729898431427", "270322147511697990977939735534363583718", "267723631221442801979097145696147437307", "333754584384245501510468932543670420434", "95775528828519581547333337077531557901", "255444633053792748649047472320548636514", "77702661047941994212636052582839756337", "218362899406139982128665981079495061687", "267701081813205585641020875484255778466", "282900258518192890822833212550327400586", "42247563924466169329151964419179810317", "305156217157970354116377045128032748556", "84381330538997707181186662728407857200", "21151889711636680407941018529401413623", "146688562715650779932072815864015335946", "45791118173062655934413331128136442056", "252234620855861422697330095988304075064", "98827027973841999852147393637186809144", "37778187173338366173887991381752707035", "255060137682497709733805931940840276922", "192152789737413084231629543229019950482", "146497084855399997216800535950748212207", "8601816038566739568701924393377900104", "239107758723751931934210481455025413734", "6210276050360086999357623721106798191", "189720666618071301287421961960704805124", "89545306349454993943609960862077008187", "150187605613290915177503421566354612678", "45432455463430162153393867276250187723", "49405386426579685105467801073350762743", "243066268558506473201644747020961881099", "314251582956150229583095294837805689876", "280781712862262370938980245438683006697", "234072376088645195498147807289837054814", "154394356217229007638643697429246061739", "201766004821667736829225520549987290507", "132173023120433608733139929765157354008", "106217611029078652437124474330450631094", "68055518102091055513090752946728865271", "33321909900317436863388198582832936542", "50654284557559235614672983468154856746", "95879223297704032598828566594763070999", "274802503416377680511730102301217745807", "263277826238649455317368260817011299672", "316821212726901757359000468453287419169", "299615412578062664442550638220156875345", "333234319198126805377435987901462257828", "320902565554811587481147828894186492091", "83814266553281279233905939109741963617", "322866554232823701751711121996053268451", "202911388302372306351971113799253465154", "94367309541019469473522573728954937661", "311207748570323304208045646877195483088", "107455127301978438050229771050425880562", "192942889693156414466677728326555651642", "192355467144009100059245327819035284629", "139953110793753575491031031278376858613", "230698688361582889158800829169497771335", "102679870586076814005990154480374177306", "252011344313911923086841341979286042550", "43796381533312842743268473867235076700", "285509233014735751526516145254854606639", "54723454569702465699575746741766715382", "180090142483310392355458193778070152056", "119697028093917144273703221409118316661", "39236455861373914212635252980788364997", "43364949489922472630736115498544946726", "27868396786232242728198712402480171116", "66830154731983965891476668575052368787", "137115198540682716104386204495433079369", "151770695493601038897032322474244540020", "320915024508569044507367704018422438589", "324736032187999448721509456958700943383", "46767811646565222802071529149289021957", "112144537612813678861413983900222896804", "198180276975540181065544278131915706770", "49434010950524073634862115041030128125", "45432455463430162153393867276250187723", "49405386426579685105467801073350762743", "243066268558506473201644747020961881099", "314251582956150229583095294837805689876", "280781712862262370938980245438683006697", "234072376088645195498147807289837054814", "1951800543720477837056577763739793521", "205281333345782348683605077537691345660", "23518148289621097149341695395388438283", "89146136735038338387541002370330274978", "289077585363108134731906429160112479101", "167132570196262597453948642033293131747", "195402957403452026280617226773209080323", "199849477526740800518428973338713971574", "230550055001624889933335358727706878595", "18078917092124440131946864326442485505", "243249246988460866648517857909074427459", "100844139142952997850705415219414928786", "283775190167060732858653772775568980129", "275855504869858235684156305681543672260", "141583259393955081835319688182619216046", "322350508892420032859618633818442533884", "72497349367352800303915748813017780801", "273860486387223142705826350849608048263", "57701850416043928046356745466103280094", "70348778597374679643851716522146806164", "114899832988249711298528525563874673626", "174331837681323776013817745202389337023", "44445359183843133108750582288676919656", "152328924997472999216818251350142484606", "204396789255110549200529091642817964368", "86765470063216216284500162679793115768", "197700397733475967827882809781018692235", "314456863513503196942591252478574911082", "228701181864047348202228418062034103138", "126974711024112313829153056160283257896", "72773335433136164633509571724834657277", "136626994454780660102234034049867882203", "257598025120703473450111619719624269547", "284034265740311913517519924109122242081", "288862661286002856887139988812115643269", "155084060787730193507350756703944211816", "183664752886138785649697969913334019058", "237392234714405169957697994219540413220", "145532043215669667427752749012318836", "191111942178987437274680594523147288432", "38948671665698212368545524807535200060", "320113562205362922121715964658120880707", "90210092506469579500330739982440998903", "150755779915039616650982950186322316159", "190242612720004326271248521609149040464", "300254822935532982500282356011048396573", "309127774862841362053757758353499807868", "22883070364637283545061955032372669785", "296742567743586948105516980100598221485", "257507488683985178861304255482563901659", "212435565397029009515188204870636354136", "128402622077010041092948694919035807142", "256229870397116995811119921481405601195", "150729929333214475714821393679993543265", "201239472720753378471368147852545645687", "50348890445711158276393604465613099928", "226968921220429700069905001694023300971", "262026129866007246631841909656875444841", "169543724255397462280321885256570424456", "236252312362542923467955634389658884135", "237666651887395215504419744054639804892", "321286008977001109901347496280261631878", "297596651538282087114877033152352586141", "52788950046790536061019508819507385495", "334717687984906351876015017282026947151", "87761432312862012814286132314525502506", "316847827313078930434752910257781693261", "4968908499089915763853188923857963104", "19204610291099095136410975051020036907", "161374838074741889965706815960646264073", "321481009807618678290061659785401357103", "58947739515433813260128220652485392803" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-c80ee0ec", "target": { "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/ECDSA5Test.java" } }, { "digest": { "line_hashes": [ "177096546541748867367699780445057275796", "175169187112491961158928739515511190834", "237037185336860219074247505274982189088", "8787383257664020889431354964410337547", "38540829165118039058582367117072218841", "264167280836535600889299342201772795234", "303454827840705382374021863600642451851", "5283545115524138254617159394901560465", "54339207175021658509884097720332228201", "218625212133909611484304573071760215628", "267096831272934439079272463386709377869", "260621397118956908602503841567252636523" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-deb37df3", "target": { "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/ec/SignatureSpi.java" } }, { "digest": { "line_hashes": [ "147470155920277528110411409437537909400", "271712012220061427488427756957726932476", "190245558476828372758443146424986729486", "179693620519994112302358845783008834318" ], "threshold": 0.9 }, "deprecated": false, "signature_version": "v1", "source": "https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647", "signature_type": "Line", "id": "CVE-2016-1000342-ff61f771", "target": { "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/DSATest.java" } } ] }