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Fencer Intel
medium 6.8

CVE-2013-2053 json

Buffer overflow in the atodn function in Openswan before 2.6.39, when Opportunistic Encryption is enabled and an RSA key is being used, all…

published 13y ago modified 4mo ago also EUVD-2013-2035

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

Buffer overflow in the atodn function in Openswan before 2.6.39, 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-2013-2052 and CVE-2013-2054.

Patch / fix

  • openswan RHEL 5 2.6.32-5.el5_9
  • openswan RHEL 6 2.6.32-20.el6_4

red hat advisories RHSA-2013:0827

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-2053 updated cvss 7.6

Openswan: remote buffer overflow in atodn()

  • Red Hat Enterprise Linux (v. 5 server) openswan 2.6.32-5.el5_9 Red Hat Enterprise Linux Desktop (v. 6) openswan 2.6.32-20.el6_4 Red Hat Enterprise Linux Desktop Optional (v. 6) openswan 2.6.32-20.el6_4 Red Hat Enterprise Linux Server (v. 6) openswan 2.6.32-20.el6_4 Red Hat Enterprise Linux Server Optional (v. 6) openswan 2.6.32-20.el6_4 Red Hat Enterprise Linux Workstation (v. 6) openswan 2.6.32-20.el6_4
    +1 more products
    Red Hat Enterprise Linux Workstation Optional (v. 6) openswan 2.6.32-20.el6_4
    fixed: vendor fix RHSA-2013:0827

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.45% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

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

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.