CVE-2009-1415lib/pk-libgcrypt.c in libgnutls in GnuTLS before 2.6.6 does not properly handle invalid DSA signatures, which allows remote attackers to…
- 4.3MediumCVSS base score
- 7.9%Exploitation in 30 daysEPSS · top 5.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- GnuTLS 2.6.x - libgnutls lib/pk-libgcrypt.c Malformed DSA Key Handling Remote Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 32964dos, linuxpublished 30 Apr 2009Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 6 days later
· 6 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 7.9% · top 5.2% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
References
References13
- gnutls-libgnutls-dos(50445) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- [gnutls-devel] 20090423 Re: some crashes on using DSA keys (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [gnutls-devel] 20090430 Double free and free of invalid pointer on certain errors [GNUTLS-SA-2009-1] [CVE-2009-1415] (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- gnutls-dsa-code-execution(50257) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3488 (opens in a new tab)x_refsource_CONFIRMx_transferred
- gnutls-dsa-dos(50260) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- ADV-2009-1218 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 34783 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- GLSA-200905-04 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 1022157 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 34842 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35211 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDVSA-2009:116 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-1413 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-1415)Record last updated .