OpenCVE

An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Debian	Debian Linux
Ruby-lang	Ruby

Configuration 1 [-]

OR	cpe:2.3:a:ruby-lang:ruby:2.2.2:::::::*
	cpe:2.3:a:ruby-lang:ruby:2.3.0:::::::*

Configuration 2 [-]

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

No data.

References

Link	Providers
http://www.talosintelligence.com/reports/TALOS-2016-0032/
https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html
https://nvd.nist.gov/vuln/detail/CVE-2016-2338
https://security.netapp.com/advisory/ntap-20221228-0005/
https://www.cve.org/CVERecord?id=CVE-2016-2338

History

No history.

MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2020-02-14T00:00:00

Updated: 2024-08-05T23:24:48.961Z

Reserved: 2016-02-12T00:00:00

Link: CVE-2016-2338

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-09-29T03:15:11.470

Modified: 2024-11-21T02:48:15.353

Link: CVE-2016-2338

Redhat

Severity : Moderate

Publid Date: 2022-09-29T00:00:00Z

Links: CVE-2016-2338 - Bugzilla

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ruby-lang:ruby:2.2.2:*:*:*:*:*:*:*", "matchCriteriaId": "5FCCD8F3-E667-42F2-9861-14EDFB16583A", "vulnerable": true}, {"criteria": "cpe:2.3:a:ruby-lang:ruby:2.3.0:*:*:*:*:*:*:*", "matchCriteriaId": "822307DD-7F7D-44C2-9C4B-CB8704663410", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer \"head\" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de desbordamiento de pila explotable en la funci\u00f3n Psych::Emitter start_document de Ruby. En la funci\u00f3n Psych::Emitter start_document la asignaci\u00f3n de \"head\" del buffer de heap es realizada en base a la longitud del array de etiquetas. Un objeto especialmente construido que es pasado como elemento de la matriz de etiquetas puede aumentar el tama\u00f1o de esta matriz despu\u00e9s de la asignaci\u00f3n mencionada y causar un desbordamiento de la pila"}], "id": "CVE-2016-2338", "lastModified": "2024-11-21T02:48:15.353", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-09-29T03:15:11.470", "references": [{"source": "cret@cert.org", "tags": ["Exploit", "Third Party Advisory"], "url": "http://www.talosintelligence.com/reports/TALOS-2016-0032/"}, {"source": "cret@cert.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html"}, {"source": "cret@cert.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20221228-0005/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "http://www.talosintelligence.com/reports/TALOS-2016-0032/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20221228-0005/"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "ruby: heap buffer overflow in the Psych::Emitter start_document function", "id": "2133689", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2133689"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer \"head\" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.", "An exploitable heap overflow vulnerability was found in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer \"head\" allocation is made based on the tags array length. A specially constructed object passed as elements of tags array can increase this array size after mentioned allocation, causing a heap overflow."], "name": "CVE-2016-2338", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ruby:2.5/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ruby:2.7/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ruby:3.0/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ruby:3.1/ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "ruby:3.1/ruby", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Not affected", "package_name": "rh-ruby27-ruby", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Not affected", "package_name": "rh-ruby30-ruby", "product_name": "Red Hat Software Collections"}], "public_date": "2022-09-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-2338\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-2338\nhttp://www.talosintelligence.com/reports/TALOS-2016-0032/"], "threat_severity": "Moderate"}