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CVE-2009-1378
Multiple memory leaks in the dtls1_process_out_of_seq_message function in ssl/d1_both.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allow…
- 5.0MediumCVSS base score
- 12.7%Exploitation in 30 daysEPSS · top 3.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
Multiple memory leaks in the dtls1_process_out_of_seq_message function in ssl/d1_both.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allow remote attackers to cause a denial of service (memory consumption) via DTLS records that (1) are duplicates or (2) have sequence numbers much greater than current sequence numbers, aka "DTLS fragment handling memory leak."
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit.
Show the exploits1
References tagged exploit1 reference
- 8720 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Timeline
ID reserved
By redhat
- 26 days later
· 26 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 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 12.7% · top 3.7% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
References36
- http://rt.openssl.org/Ticket/Display.html?id=1931&user=guest&pass=guest (opens in a new tab)x_refsource_CONFIRMx_transferred
- 42724 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:7229 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- SSA:2010-060-02 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
- 38794 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 8720 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- ADV-2009-1377 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- oval:org.mitre.oval:def:11309 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 35729 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- GLSA-200912-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- RHSA-2009:1335 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://cvs.openssl.org/chngview?cn=18188 (opens in a new tab)x_refsource_CONFIRMx_transferred
- HPSBMA02492 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- 38761 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 37003 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [openssl-dev] 20090518 Re: [openssl.org #1931] [PATCH] DTLS fragment handling memory leak (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 36533 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1022241 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- USN-792-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- SUSE-SR:2009:011 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://voodoo-circle.sourceforge.net/sa/sa-20091012-01.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20090518 Two OpenSSL DTLS remote DoS (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://launchpad.net/bugs/cve/2009-1378 (opens in a new tab)x_refsource_MISCx_transferred
- 35001 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 38834 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDVSA-2009:120 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 35461 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35128 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35571 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35416 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://sourceforge.net/mailarchive/message.php?msg_name=4AD43807.7080105%40users.sourceforge.net (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://kb.bluecoat.com/index?page=content&id=SA50 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [openssl-dev] 20090516 [openssl.org #1931] [PATCH] DTLS fragment handling memory leak (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 42733 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2010-0528 (opens in a new tab)vdb-entryx_refsource_VUPENx_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-2009-1376 (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-2009-1378)Record last updated .