CVE-2012-3517 - Vulnerability Details - OpenCVE

Description

Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.

Published: 2012-08-26

Score: 5.0 Medium

EPSS: 1.5% Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2012-3472	Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.01461.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html
http://openwall.com/lists/oss-security/2012/08/21/6
http://security.gentoo.org/glsa/glsa-201301-03.xml
https://bugzilla.redhat.com/show_bug.cgi?id=849949
https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c
https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html
https://trac.torproject.org/projects/tor/ticket/6480

History

No history.

Subscriptions

Tor Tor

MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2012-08-26T01:00:00.000Z

Updated: 2024-08-06T20:05:12.774Z

Reserved: 2012-06-14T00:00:00.000Z

Link: CVE-2012-3517

Vulnrichment

No data.

NVD

Status : Modified

Published: 2012-08-26T03:17:44.043

Modified: 2026-04-29T01:13:23.040

Link: CVE-2012-3517

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-399

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2012-08-19T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2012-10-11T09:00:00.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "GLSA-201301-03", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "http://security.gentoo.org/glsa/glsa-201301-03.xml"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=849949"}, {"name": "[tor-announce] 20120819 Tor 0.2.2.38 is released", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c"}, {"name": "[oss-security] 20120821 Re: CVE Request -- Tor 0.2.2.38: Three issues", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://openwall.com/lists/oss-security/2012/08/21/6"}, {"name": "openSUSE-SU-2012:1068", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://trac.torproject.org/projects/tor/ticket/6480"}, {"name": "FEDORA-2012-14638", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2012-3517", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "GLSA-201301-03", "refsource": "GENTOO", "url": "http://security.gentoo.org/glsa/glsa-201301-03.xml"}, {"name": "https://bugzilla.redhat.com/show_bug.cgi?id=849949", "refsource": "CONFIRM", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=849949"}, {"name": "[tor-announce] 20120819 Tor 0.2.2.38 is released", "refsource": "MLIST", "url": "https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html"}, {"name": "https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c", "refsource": "CONFIRM", "url": "https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c"}, {"name": "[oss-security] 20120821 Re: CVE Request -- Tor 0.2.2.38: Three issues", "refsource": "MLIST", "url": "http://openwall.com/lists/oss-security/2012/08/21/6"}, {"name": "openSUSE-SU-2012:1068", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html"}, {"name": "https://trac.torproject.org/projects/tor/ticket/6480", "refsource": "CONFIRM", "url": "https://trac.torproject.org/projects/tor/ticket/6480"}, {"name": "FEDORA-2012-14638", "refsource": "FEDORA", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T20:05:12.774Z"}, "title": "CVE Program Container", "references": [{"name": "GLSA-201301-03", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "http://security.gentoo.org/glsa/glsa-201301-03.xml"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=849949"}, {"name": "[tor-announce] 20120819 Tor 0.2.2.38 is released", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c"}, {"name": "[oss-security] 20120821 Re: CVE Request -- Tor 0.2.2.38: Three issues", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://openwall.com/lists/oss-security/2012/08/21/6"}, {"name": "openSUSE-SU-2012:1068", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://trac.torproject.org/projects/tor/ticket/6480"}, {"name": "FEDORA-2012-14638", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2012-3517", "datePublished": "2012-08-26T01:00:00.000Z", "dateReserved": "2012-06-14T00:00:00.000Z", "dateUpdated": "2024-08-06T20:05:12.774Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*", "matchCriteriaId": "D87D8965-CE3A-457E-AD9D-C8EE68F538A4", "versionEndIncluding": "0.2.2.37", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests."}, {"lang": "es", "value": "Vulnerabilidad de liberaci\u00f3n despu\u00e9s de uso en dns.c en Tor anterior a 0.2.2.38 podr\u00eda permitir a atacantes remotos causar una denegaci\u00f3n de servicio (ca\u00edda del demonio) a trav\u00e9s de vectores relacionados con solicitudes fallidas de DNS."}], "id": "CVE-2012-3517", "lastModified": "2026-04-29T01:13:23.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-08-26T03:17:44.043", "references": [{"source": "secalert@redhat.com", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html"}, {"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html"}, {"source": "secalert@redhat.com", "url": "http://openwall.com/lists/oss-security/2012/08/21/6"}, {"source": "secalert@redhat.com", "url": "http://security.gentoo.org/glsa/glsa-201301-03.xml"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=849949"}, {"source": "secalert@redhat.com", "url": "https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c"}, {"source": "secalert@redhat.com", "url": "https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "https://trac.torproject.org/projects/tor/ticket/6480"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://openwall.com/lists/oss-security/2012/08/21/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://security.gentoo.org/glsa/glsa-201301-03.xml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=849949"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://trac.torproject.org/projects/tor/ticket/6480"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-399"}], "source": "nvd@nist.gov", "type": "Primary"}]}