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CVE
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CVE-2013-2061Date: (C)2013-11-19   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V2 Severity:
CVSS Score : 2.6
Exploit Score: 4.9
Impact Score: 2.9
 
CVSS V2 Metrics:
Access Vector: NETWORK
Access Complexity: HIGH
Authentication: NONE
Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE
  
Reference:
FEDORA-2013-7531
FEDORA-2013-7552
MDVSA-2013:167
http://www.openwall.com/lists/oss-security/2013/05/06/6
https://bugs.gentoo.org/show_bug.cgi?id=468756
https://bugzilla.redhat.com/show_bug.cgi?id=960192
https://community.openvpn.net/openvpn/wiki/SecurityAnnouncement-f375aa67cc
https://github.com/OpenVPN/openvpn/commit/11d21349a4e7e38a025849479b36ace7c2eec2ee
openSUSE-SU-2013:1645
openSUSE-SU-2013:1649

CPE    15
cpe:/o:opensuse:opensuse:11.4
cpe:/a:openvpn:openvpn:1.2.0
cpe:/a:openvpn:openvpn:1.2.1
cpe:/a:openvpn:openvpn:1.3.0
...
CWE    1
CWE-200
OVAL    6
oval:org.secpod.oval:def:104900
oval:org.secpod.oval:def:104899
oval:org.secpod.oval:def:1600244
oval:org.secpod.oval:def:1300197
...

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