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CVE-2013-2053

24
FAUCET Score

CVE-2013-2053 describes a buffer overflow in the atodn function of Openswan versions prior to 2.6.39. This vulnerability, triggered when Opportunistic Encryption is enabled with RSA keys, allows remote attackers to crash the pluto IKE daemon and potentially execute arbitrary code through crafted DNS TXT records. The CVSS score of 6.8 indicates a medium severity, with a network attack vector, medium attack complexity, and potential for partial confidentiality, integrity, and availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.38CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:*:*:*:*:*:*:*:*
2.6.01CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.6.01:*:*:*:*:*:*:*
2.6.02CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.6.02:*:*:*:*:*:*:*
2.6.03CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.6.03:*:*:*:*:*:*:*
2.6.04CPE matchmatch criteria
cpe:2.3:a:xelerance:openswan:2.6.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.43%
Probability of exploitation in next 30 days
EPSS Percentile
82.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0243 is in the 72nd percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openswan-0:2.6.32-5.el5_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openswan-0:2.6.32-20.el6_4
View patch

Vendor Advisories (1)

redhatCVE-2013-2053Important

Openswan: remote buffer overflow in atodn()

May 13, 2013

References

lists.opensuse.org / opensuse-security-announce/2013-07/msg00008.html
rhn.redhat.com / errata/RHSA-2013-0827.html
bugzilla.redhat.com / show_bug.cgi
lists.libreswan.org / pipermail/swan-announce/2013/000003.html
openswan.org / news/13
Vendor Advisory
debian.org / security/2014/dsa-2893
securityfocus.com / bid/59838