Description
Use-after-free vulnerability in the dtls1_retrieve_buffered_fragment function in ssl/d1_both.c in OpenSSL 1.0.0 Beta 2 allows remote attackers to cause a denial of service (openssl s_client crash) and possibly have unspecified other impact via a DTLS packet, as demonstrated by a packet from a server that uses a crafted server certificate.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openssl | 0.9.8k-1 | — |
| Debian 13 | openssl | 0.9.8k-1 | — |
| Debian 12 | openssl | 0.9.8k-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | openssl +2 | 0.9.8e-12.el5 | RHSA-2009:1335 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- OpenSSL 0.9.8k/1.0.0-beta2 - DTLS Remote Memory Exhaustion Denial of Service EDB-8720 · dos · May 18, 2009 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- RHSA-2009:1335 Red Hat Security Advisory: openssl security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- openSUSE-SU-2024:11127-1 libopenssl-1_1-devel-1.1.1l-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 42724 third-party-advisory
- https://launchpad.net/bugs/cve/2009-1379
- SSA:2010-060-02 vendor-advisory
- 38794 third-party-advisory
- [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates mailing-list
- ADV-2009-1377 vdb-entry
- 35729 third-party-advisory
- GLSA-200912-01 vendor-advisory
- RHSA-2009:1335 vendor-advisory
- HPSBMA02492 vendor-advisory
- 38761 third-party-advisory
- 37003 third-party-advisory
- 36533 third-party-advisory
- 1022241 vdb-entry
- USN-792-1 vendor-advisory
- SUSE-SR:2009:011 vendor-advisory
- oval:org.mitre.oval:def:9744 vdb-entry signature
- openssl-dtls1retrievebufferedfragment-dos(50661) vdb-entry
- http://voodoo-circle.sourceforge.net/sa/sa-20091012-01.html
- 35138 vdb-entry
- [oss-security] 20090518 Re: Two OpenSSL DTLS remote DoS mailing-list
- 38834 third-party-advisory
- 35461 third-party-advisory
- 35571 third-party-advisory
- oval:org.mitre.oval:def:6848 vdb-entry signature
- 35416 third-party-advisory
- http://sourceforge.net/mailarchive/message.php?msg_name=4AD43807.7080105%40users.sourceforge.net
- https://kb.bluecoat.com/index?page=content&id=SA50
- http://rt.openssl.org/Ticket/Display.html?id=1923&user=guest&pass=guest
- 42733 third-party-advisory
- ADV-2010-0528 vdb-entry