CVE-2013-2061
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.81% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 86.3% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2013-11-15 18:16Z12 YR AGO
- Last updated
- 2024-08-06 15:20Z2 YR AGO
- Reserved
- 2013-02-19
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- e857dbc47d3cfda8977b609d97b4a50a39f8c5876d63ae2a252cf0a52aa53c84
05 Affected products
06 References
- lists.fedoraproject.orgFEDORA-2013-7552http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105568.html
- lists.fedoraproject.orgFEDORA-2013-7531http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105609.html
- lists.opensuse.orgopenSUSE-SU-2013:1645http://lists.opensuse.org/opensuse-updates/2013-11/msg00012.html
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=960192
- www.openwall.com[oss-security] 20130506 Re: CVE request: OpenVPN use of non-constant-time memcmp in HMAC comparison in openvpn_decrypthttp://www.openwall.com/lists/oss-security/2013/05/06/6
- www.mandriva.comMDVSA-2013:167http://www.mandriva.com/security/advisories?name=MDVSA-2013:167
- lists.opensuse.orgopenSUSE-SU-2013:1649http://lists.opensuse.org/opensuse-updates/2013-11/msg00016.html
- bugs.gentoo.orghttps://bugs.gentoo.org/show_bug.cgi?id=468756
- github.comhttps://github.com/OpenVPN/openvpn/commit/11d21349a4e7e38a025849479b36ace7c2eec2ee
- community.openvpn.nethttps://community.openvpn.net/openvpn/wiki/SecurityAnnouncement-f375aa67cc
07 Fixed in
Debian 12
- openvpn Fixed in 2.3.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openvpn Fixed in 2.3.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openvpn Fixed in 2.3.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.