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
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.
- Published
- Aug 9, 2013
- Updated
- Jun 16, 2026
- EPSS
- 43.9% · 99th percentile
- CWE
- CWE-119
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Report tools
Action score
43
Plan
Add it to your regular patch cycle.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 13 / 30 · 43.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| opensuse | opensuse | cpe:2.3:o:opensuse:opensuse |
| squid-cache | squid | cpe:2.3:a:squid-cache:squid |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- opensuse opensuse11.4
- opensuse opensuse12.2
- opensuse opensuse12.3
- squid-cache squid3.2.0.2
- squid-cache squid3.2.0.3
- squid-cache squid3.2.0.4
- squid-cache squid3.2.0.5
- squid-cache squid3.2.0.6
- squid-cache squid3.2.0.7
- squid-cache squid3.2.0.8
- squid-cache squid3.2.0.9
- squid-cache squid3.3.0
- squid-cache squid3.3.0.2
- squid-cache squid3.3.0.3
- squid-cache squid3.3.1
- squid-cache squid3.3.2
- squid-cache squid3.3.3
- squid-cache squid3.3.4
- squid-cache squid3.3.5
- squid-cache squid3.3.6
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Red Hat:enterprise_linux:5::client_workstation | squid | before 7:2.6.STABLE21-7.el5_10 | 7:2.6.STABLE21-7.el5_10 |
| Red Hat:enterprise_linux:5::client_workstation | squid-debuginfo | before 7:2.6.STABLE21-7.el5_10 | 7:2.6.STABLE21-7.el5_10 |
| Red Hat:enterprise_linux:6::server | squid | before 7:3.1.10-22.el6_5 | 7:3.1.10-22.el6_5 |
| Red Hat:enterprise_linux:6::server | squid-debuginfo | before 7:3.1.10-22.el6_5 | 7:3.1.10-22.el6_5 |
| SUSE:Linux Enterprise Server 11 SP4 | squid3 | before 3.1.23-8.16.30.1 | 3.1.23-8.16.30.1 |
Same product
opensuse: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-7805Heap-based buffer overflow in libsndfile 1.0.25 allows remote attackers to have unspecified impact via the headindex value in the header in 41Plan
- CVE-2015-5957Buffer overflow in the DumpSysVar function in var.c in Remind before 3.1.15 allows attackers to have unspecified impact via a long name.41Plan
- CVE-2008-2388Multiple off-by-one errors in opensuse-updater in openSUSE 10.2 have unspecified impact and attack vectors.40Plan
- CVE-2016-2335The CInArchive::ReadFileItem method in Archive/Udf/UdfIn.cpp in 7zip 9.20 and 15.05 beta and p7zip allows remote attackers to cause a denial38Monitor
- CVE-2016-1663The SerializedScriptValue::transferArrayBuffers function in WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp in the V8 bindings in B35Monitor
- CVE-2014-8157Off-by-one error in the jpc_dec_process_sot function in JasPer 1.900.1 and earlier allows remote attackers to cause a denial of service (cra35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| red hat:squid | 7:2.6.STABLE21-7.el5_10 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:squid-debuginfo | 7:2.6.STABLE21-7.el5_10 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| suse:squid3 | 3.1.23-8.16.30.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- lists.opensuse.org/opensuse-updates/2013-09/msg00024.html
- lists.opensuse.org/opensuse-updates/2013-09/msg00025.html
- lists.opensuse.org/opensuse-updates/2013-09/msg00030.html
- lists.opensuse.org/opensuse-updates/2013-09/msg00032.html
- lists.opensuse.org/opensuse-updates/2013-09/msg00033.html
- secunia.com/advisories/54076
- secunia.com/advisories/54834
- secunia.com/advisories/54839
- www.openwall.com/lists/oss-security/2013/07/11/8
- www.securityfocus.com/bid/61111
- www.squid-cache.org/Advisories/SQUID-2013_2.txt
- www.squid-cache.org/Versions/v3/3.0/changesets/squid-3.0-9200.patch
- www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10487.patch
- www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11823.patch
- www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12587.patch
- exchange.xforce.ibmcloud.com/vulnerabilities/85564
Vendor advisories and official records. Exploit/PoC links are deliberately left out.