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Fencer Intel
high 7.5

CVE-2013-4115 in the critical feed json

Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3.3 through 3.3.6 allows remote attackers to…

published 2013-08-09 13 y ago modified 2026-06-16 4 mo ago also EUVD-2013-4044

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
43.9%
EPSS 43.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3.3 through 3.3.6 allows remote attackers to cause a denial of service (memory corruption and server termination) via a long name in a DNS lookup request.

Patch / fix

  • squid RHEL 5 7:2.6.STABLE21-7.el5_10
  • squid RHEL 6 7:3.1.10-22.el6_5

red hat advisories RHSA-2014:1148

  • squid3 SLES for SAP 11 SP4, SLES 11 SP4 3.1.23-8.16.30.1

suse advisories SUSE-SU-2016:2089-1

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-2013-4115 updated cvss 3.3

squid: buffer overflow when processing overly long DNS names (SQUID-2013:2)

  • Red Hat Enterprise Linux (v. 5 server) squid 2.6.STABLE21-7.el5_10 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) squid 2.6.STABLE21-7.el5_10 Red Hat Enterprise Linux Server (v. 6) squid 3.1.10-22.el6_5 Red Hat Enterprise Linux Workstation (v. 6) squid 3.1.10-22.el6_5
    fixed: vendor fix RHSA-2014:1148
  • Red Hat Enterprise Linux 7 squid, squid-sysvinit, squid-migration-script
    not affected: vulnerable code not present

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

43.90% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/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.