Buffer overflow in the atodn function in libreswan 3.0 and 3.1, when Opportunistic Encryption is enabled and an RSA key is being used, allo…

published 2013-07-09 13y ago modified 2026-06-16 4mo ago also EUVD-2013-2034

cvss: 5.1; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

Buffer overflow in the atodn function in libreswan 3.0 and 3.1, when Opportunistic Encryption is enabled and an RSA key is being used, allows remote attackers to cause a denial of service (pluto IKE daemon crash) and possibly execute arbitrary code via crafted DNS TXT records. NOTE: this might be the same vulnerability as CVE-2013-2053 and CVE-2013-2054.

Patch / fix

links 1

libreswan.org/security/CVE-2013-2052/CVE-2013-2052.txt advisory

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Exploit prediction

1.77% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	5.1	AV:N/AC:H/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

libreswan.org /security/CVE-2013-2052/CVE-2013-2052.txt
patch, vendor-advisory
lists.libreswan.org /pipermail/swan-announce/2013/000003.html
mailing-list, vendor-advisory

Sources

CVE List CVE-2013-2052
NVD CVE-2013-2052

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