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Status published
Low
CVE-2013-2061
The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier,...
Vulnerability Description
The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does not run in constant time and a padding oracle attack on the CBC mode cipher.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105568.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105609.html
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00012.html
- https://bugzilla.redhat.com/show_bug.cgi?id=960192
- http://www.openwall.com/lists/oss-security/2013/05/06/6
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:167
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00016.html
- https://bugs.gentoo.org/show_bug.cgi?id=468756
- https://github.com/OpenVPN/openvpn/commit/11d21349a4e7e38a025849479b36ace7c2eec2ee
- https://community.openvpn.net/openvpn/wiki/SecurityAnnouncement-f375aa67cc
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Affected Vendor
openvpn
View all reports →Affected Software
openvpn, openvpn access server, opensuse
Vulnerable Versions:
0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 1.3.2, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.5.0, 1.6.0, 2.1.0, 2.2.0, 2.0.0, 11.4
Timeline
Official Publish:
November 15th, 2013
Last Modified:
August 6th, 2024
Added to House:
July 19th, 2026
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.