HIGH
squid: buffer overflow when processing overly long DNS names (SQUID-2013:2)
Published Aug 9, 2013
7.5
HIGHCVSS 2.0
EPSS 43.90%
Description
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.
Affected products
No data.
Configuration 1
Configuration 2
AND
OR
- 3.2.0.2
- 3.2.0.3
- 3.2.0.4
- 3.2.0.5
- 3.2.0.6
- 3.2.0.7
- 3.2.0.8
- 3.2.0.9
- 3.3.0
- 3.3.0.2
- 3.3.0.3
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
Running on/with
OR
- 3.2.0.1
- 3.2.0.10
- 3.2.0.11
No data.
Red Hat Enterprise Linux 5
squid-7:2.6.STABLE21-7.el5_10
Fixed · RHSA-2014:1148
Red Hat Enterprise Linux 6
squid-7:3.1.10-22.el6_5
Fixed · RHSA-2014:1148
Red Hat Enterprise Linux 7
squid
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | squid-7:2.6.STABLE21-7.el5_10 | Fixed | RHSA-2014:1148 |
| Red Hat Enterprise Linux 6 | squid-7:3.1.10-22.el6_5 | Fixed | RHSA-2014:1148 |
| Red Hat Enterprise Linux 7 | squid | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
43.90% 0.43895
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.43895
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 43.90% (0.43895) | 98.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 42.99% (0.42990) | 98.55th | v5 (v2026.06.15) |
| Dec 28, 2025 | 75.06% (0.75061) | 98.83th | v4 (v2025.03.14) |
| Dec 27, 2025 | 65.54% (0.65539) | 98.44th | v4 (v2025.03.14) |
| Oct 28, 2025 | 75.06% (0.75061) | 98.81th | v4 (v2025.03.14) |
| Oct 27, 2025 | 65.54% (0.65539) | 98.42th | v4 (v2025.03.14) |
| Oct 1, 2025 | 75.06% (0.75061) | 98.84th | v4 (v2025.03.14) |
| Jul 30, 2025 | 65.54% (0.65539) | 98.41th | v4 (v2025.03.14) |
| Mar 30, 2025 | 75.06% (0.75061) | 98.81th | v4 (v2025.03.14) |
| Mar 29, 2025 | 79.83% (0.79834) | 98.84th | v4 (v2025.03.14) |
| Mar 19, 2025 | 75.06% (0.75061) | 98.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 73.45% (0.73451) | 98.72th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.66% (0.02655) | 90.77th | v3 (v2023.03.01) |
| Mar 22, 2023 | 2.66% (0.02655) | 88.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.11% (0.03114) | 89.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
Weaknesses (1)
References (22)
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html vendor-advisoryx_refsource_SUSEVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00025.html vendor-advisoryx_refsource_SUSEVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00030.html vendor-advisoryx_refsource_SUSEVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00032.html vendor-advisoryx_refsource_SUSEVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00033.html vendor-advisoryx_refsource_SUSEVendor Advisory
- http://secunia.com/advisories/54076 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/54834 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/54839 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.openwall.com/lists/oss-security/2013/07/11/8 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/61111 vdb-entryx_refsource_BID
- http://www.squid-cache.org/Advisories/SQUID-2013_2.txt x_refsource_CONFIRMVendor Advisory
- http://www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9200.patch x_refsource_CONFIRMPatch
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10487.patch x_refsource_CONFIRMPatch
- http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11823.patch x_refsource_CONFIRMPatch
- http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12587.patch x_refsource_CONFIRMPatch
- https://access.redhat.com/security/cve/CVE-2013-4115 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=983653 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/85564 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2013-4115
- https://www.cve.org/CVERecord?id=CVE-2013-4115
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Aug 9, 2013
Updated Aug 6, 2024
Reserved Jun 12, 2013
Link CVE-2013-4115
CISA Vulnrichment
Updated n/a