CVE-2009-1415

GnuTLS < 2.6.6 - Denial of Service via Invalid DSA Signature Handling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-1415. PoCs published by Miroslav Kratochvil.

AI-analyzed exploit summary This exploit demonstrates a double-free vulnerability in GnuTLS versions prior to 2.6.6 by importing a crafted DSA certificate and verifying data, which can lead to a crash or potential code execution.

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Miroslav Kratochvil · cdoslinux
https://www.exploit-db.com/exploits/32964

This exploit demonstrates a double-free vulnerability in GnuTLS versions prior to 2.6.6 by importing a crafted DSA certificate and verifying data, which can lead to a crash or potential code execution.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: GnuTLS < 2.6.6
No auth needed
Prerequisites: GnuTLS library < 2.6.6
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (13)

Core 13
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/50445
Broken Link, Patch mailing-list x_refsource_mlist
http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3515
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/50257
Not Applicable vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/50260
Broken Link vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/1218
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/34783
Third Party Advisory vendor-advisory x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-200905-04.xml
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1022157
Broken Link, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/34842
Broken Link third-party-advisory x_refsource_secunia
http://secunia.com/advisories/35211
Broken Link vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2009:116

Scores

EPSS 0.0792
EPSS Percentile 94.0%

Details

CWE
CWE-824
Status published
Products (1)
gnu/gnutls < 2.6.6
Published Apr 30, 2009
Tracked Since Feb 18, 2026