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CVE-2013-4115

Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3...

7.5 HighFix available

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.

Exploit likelihood

43.9%Up 40.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2013-4115
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2013-4115
Updated
2026-11-02
EUVDEUVD-2013-4044 No score

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.

Record
EUVD-2013-4044
Updated
2026-11-03
GitHub AdvisoriesGHSA-8f69-q75r-2vcf No score

Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3...

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.

Record
GHSA-8f69-q75r-2vcf
Weakness
CWE-119
Updated
2026-11-02
OSVMGASA-2013-0227 No score

Updated squid packages fix security vulnerability

Due to incorrect data validation Squid is vulnerable to a buffer overflow attack when processing specially crafted HTTP requests. This problem allows any trusted client or client script who can generate HTTP requests to trigger a buffer overflow in Squid, resulting in a termination of the Squid service (CVE-2013-4115).

Record
MGASA-2013-0227
Updated
2026-11-02
OSVMGASA-2013-0228 No score

Updated squid packages fix security vulnerabilities

Due to incorrect data validation Squid is vulnerable to a buffer overflow attack when processing specially crafted HTTP requests. This problem allows any trusted client or client script who can generate HTTP requests to trigger a buffer overflow in Squid, resulting in a termination of the Squid service (CVE-2013-4115).

Due to incorrect data validation Squid is vulnerable to a denial of service attack when processing specially crafted HTTP requests. This problem allows any client who can generate HTTP requests to perform a denial of service attack on the Squid service (CVE-2013-4123).

Also, due to being renamed in Squid 3.2, the Squid external acl helpers for matching against IP addresses and LDAP groups were not selected to be built in the squid package for Mageia 3.

This has been corrected and these helpers are now included. Additionally, the helpers for eDirectory IP address lookups and matching LDAP groups using Kerberos credentials have also been included.

Record
MGASA-2013-0228
Updated
2026-11-02
OSVSUSE-SU-2016:2089-1 No score

Security update for squid3

This update for squid3 fixes the following issues:

  • Multiple issues in pinger ICMP processing. (CVE-2014-7141, CVE-2014-7142)

  • CVE-2016-3947: Buffer overrun issue in pinger ICMPv6 processing. (bsc#973782)

  • CVE-2016-4554: fix header smuggling issue in HTTP Request processing (bsc#979010)

  • Fix multiple Denial of Service issues in HTTP Response processing. (CVE-2016-2569, CVE-2016-2570, CVE-2016-2571, CVE-2016-2572, bsc#968392, bsc#968393, bsc#968394, bsc#968395)

  • Regression caused by the DoS fixes above (bsc#993299)

  • CVE-2016-3948: Fix denial of service in HTTP Response processing (bsc#973783)

  • CVE-2016-4051: fixes buffer overflow in cachemgr.cgi (bsc#976553)

  • CVE-2016-4052, CVE-2016-4053, CVE-2016-4054:

    • fixes multiple issues in ESI processing (bsc#976556)
  • CVE-2016-4556: fixes double free vulnerability in Esi.cc (bsc#979008)

  • CVE-2015-5400: Improper Protection of Alternate Path (bsc#938715)

  • CVE-2014-6270: fix off-by-one in snmp subsystem (bsc#895773)

  • Memory leak in squid3 when using external_acl (bsc#976708)

Record
SUSE-SU-2016:2089-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
squid
Mageia:2
before 3.1.19-4.4.mga2
3.1.19-4.4.mga2
squid
Mageia:3
From an advisory covering 2 CVEs
before 3.2.10-1.4.mga3
3.2.10-1.4.mga3
squid
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
before 7:2.6.STABLE21-7.el5_10
7:2.6.STABLE21-7.el5_10
squid-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
before 7:2.6.STABLE21-7.el5_10
7:2.6.STABLE21-7.el5_10
squid
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
before 7:2.6.STABLE21-7.el5_10
7:2.6.STABLE21-7.el5_10
squid-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
before 7:2.6.STABLE21-7.el5_10
7:2.6.STABLE21-7.el5_10
squid
Red Hat:enterprise_linux:6::server
From an advisory covering 2 CVEs
before 7:3.1.10-22.el6_5
7:3.1.10-22.el6_5
squid-debuginfo
Red Hat:enterprise_linux:6::server
From an advisory covering 2 CVEs
before 7:3.1.10-22.el6_5
7:3.1.10-22.el6_5
squid
Red Hat:enterprise_linux:6::workstation
From an advisory covering 2 CVEs
before 7:3.1.10-22.el6_5
7:3.1.10-22.el6_5
squid-debuginfo
Red Hat:enterprise_linux:6::workstation
From an advisory covering 2 CVEs
before 7:3.1.10-22.el6_5
7:3.1.10-22.el6_5
squid3
SUSE:Linux Enterprise Server 11 SP4
From an advisory covering 25 CVEs
before 3.1.23-8.16.30.1
3.1.23-8.16.30.1
squid3
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
From an advisory covering 25 CVEs
before 3.1.23-8.16.30.1
3.1.23-8.16.30.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-4115 is a high vulnerability (CVSS 7.5) in Squid-cache Squid, published July 21, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 43.9%, the 98th percentile. Fixed in squid 3.1.19-4.4.mga2.

References

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