Debian Security Advisory
DSA-851-1 openvpn -- programming errors
- Date Reported:
- 09 Oct 2005
- Affected Packages:
- openvpn
- Vulnerable:
- Yes
- Security database references:
- In the Debian bugtracking system: Bug 324167.
In Mitre's CVE dictionary: CVE-2005-2531, CVE-2005-2532, CVE-2005-2533, CVE-2005-2534. - More information:
-
Several security related problems have been discovered in openvpn, a Virtual Private Network daemon. The Common Vulnerabilities and Exposures project identifies the following problems:
- CAN-2005-2531
Wrong processing of failed certificate authentication when running with "verb 0" and without TLS authentication can lead to a denial of service by disconnecting the wrong client.
- CAN-2005-2532
Wrong handling of packets that can't be decrypted on the server can lead to the disconnection of unrelated clients.
- CAN-2005-2533
When running in "dev tap" Ethernet bridging mode, openvpn can exhaust its memory by receiving a large number of spoofed MAC addresses and hence denying service.
- CAN-2005-2534
Simultaneous TCP connections from multiple clients with the same client certificate can cause a denial of service when
--duplicate-cnis not enabled.
The old stable distribution (woody) does not contain openvpn packages.
For the stable distribution (sarge) these problems have been fixed in version 2.0-1sarge1.
For the unstable distribution (sid) these problems have been fixed in version 2.0.2-1.
We recommend that you upgrade your openvpn package.
- CAN-2005-2531
- Fixed in:
-
Debian GNU/Linux 3.1 (sarge)
- Source:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1.dsc
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1.diff.gz
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0.orig.tar.gz
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1.diff.gz
- Alpha:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_alpha.deb
- AMD64:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_amd64.deb
- ARM:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_arm.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_i386.deb
- Intel IA-64:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_ia64.deb
- HPPA:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_hppa.deb
- Motorola 680x0:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_m68k.deb
- Big endian MIPS:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_mips.deb
- Little endian MIPS:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_mipsel.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_powerpc.deb
- IBM S/390:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_s390.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/o/openvpn/openvpn_2.0-1sarge1_sparc.deb
MD5 checksums of the listed files are available in the original advisory.