CVE-2018-1000115: Affected product: Uncontrolled Resource Consumption

Distribution release	Source package	Vendor state	Fixed version	Evidence
Debian trixietrixie · source	`memcached`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.5.6-1`	Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · source	`memcached`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.5.6-1`	Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · source	`memcached`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.5.6-1`	Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · source	`memcached`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.5.6-1`	Debian Security Tracker ↗Source updated 6 Oct 2026

Recommended actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume (Network Amplification, CWE-406) vulnerability in the UDP support of the memcached server that can result in denial of service via network flood (traffic amplification of 1:50,000 has been reported by reliable sources). This attack appear to be exploitable via network connectivity to port 11211 UDP. This vulnerability appears to have been fixed in 1.5.6 due to the disabling of the UDP protocol by default.

What

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path: a network path → Uncontrolled Resource Consumption → disrupt the affected service
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: None
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-400 ↗
CWE-400: Uncontrolled Resource Consumption. The product does not properly control the allocation and maintenance of a limited resource.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Common Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedDenial of serviceCWE-400Public exploit reference

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2018-1842Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

Canadian Centre for Cyber Security · English · AV18-116Juniper security bulletins

CVE-2013-6422, CVE-2014-0015, CVE-2016-3739, CVE-2017-7407, CVE-2016-8615, CVE-2016-8616, CVE-2016-8617, CVE-2016-8618, CVE-2016-8619, CVE-2016-8620, CVE-2016-8621, CVE-2016-8622, CVE-2016-8623, CVE-2016-8624, CVE-2016-8625, CVE-2017-3145, CVE-2018-2579, CVE-2018-2588, CVE-2018-2599, CVE-2018-2603, CVE-2018-2618, CVE-2018-2629, CVE-2018-2633, CVE-2018-2637, CVE-2018-2663, CVE-2018-2678, CVE-2017-12613, CVE-2017-10198, 2017-10281, CVE-2017-10295, CVE-2017-10345, CVE-2017-10355, CVE-2017-10356, CVE-2017-10388, CVE-2017-15896, CVE-2017-5753, CVE-2017-5715, CVE-2017-5754, CVE-2018-0039, CVE-2018-0040, CVE-2018-0042, CVE-2018-0038, CVE-2018-0041, CVE-2018-1000115, CVE-2018-0037, CVE-2018-0034, CVE-2018-0035, CVE-2018-0032, CVE-2018-0031, CVE-2018-0030, CVE-2018-0029, CVE-2018-0027, CVE-2018-0026, CVE-2018-0025, CVE-2018-0024, CVE-2015-7236 Suggested action CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly. References https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10803&cat=SIRT_1&actp=LIST https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10857&cat=SIRT_1&actp=LIST https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10858&cat=SIRT_1&actp=LIST https://kb.juniper.net/InfoCenter/index?page=content&id=J

Official advisory ↗

CERT-FR · French · CERTFR-2019-AVI-023Multiples vulnérabilités dans Oracle Sun Systems

verbose-5072807.html#SUNS Référence CVE CVE-2016-0635 https://www.cve.org/CVERecord?id=CVE-2016-0635 Référence CVE CVE-2016-8705 https://www.cve.org/CVERecord?id=CVE-2016-8705 Référence CVE CVE-2017-1000456 https://www.cve.org/CVERecord?id=CVE-2017-1000456 Référence CVE CVE-2017-14517 https://www.cve.org/CVERecord?id=CVE-2017-14517 Référence CVE CVE-2017-18267 https://www.cve.org/CVERecord?id=CVE-2017-18267 Référence CVE CVE-2017-5645 https://www.cve.org/CVERecord?id=CVE-2017-5645 Référence CVE CVE-2018-0734 https://www.cve.org/CVERecord?id=CVE-2018-0734 Référence CVE CVE-2018-0739 https://www.cve.org/CVERecord?id=CVE-2018-0739 Référence CVE CVE-2018-1000115 https://www.cve.org/CVERecord?id=CVE-2018-1000115 Référence CVE CVE-2018-11763 https://www.cve.org/CVERecord?id=CVE-2018-11763 Référence CVE CVE-2018-1275 https://www.cve.org/CVERecord?id=CVE-2018-1275 Référence CVE CVE-2018-13988 https://www.cve.org/CVERecord?id=CVE-2018-13988 Référence CVE CVE-2018-15909 https://www.cve.org/CVERecord?id=CVE-2018-15909 Référence CVE CVE-2018-17183 https://www.cve.org/CVERecord?id=CVE-2018-17183 Référence CVE CVE-2018-19158 https://www.cve.org/CVERecord?id=CVE-2018-19158 Référence CVE CVE-2018-19628 https://www.cve.org/CVERecord?id=CVE-2018-19628 Référence CVE CVE-2018-3070 https://www.cve.org/CVERecord?id=C

Official advisory ↗

CERT-FR · French · CERTFR-2018-AVI-339Multiples vulnérabilités dans les produits Juniper

Record?id=CVE-2018-0035 Référence CVE CVE-2018-0037 https://www.cve.org/CVERecord?id=CVE-2018-0037 Référence CVE CVE-2018-0038 https://www.cve.org/CVERecord?id=CVE-2018-0038 Référence CVE CVE-2018-0039 https://www.cve.org/CVERecord?id=CVE-2018-0039 Référence CVE CVE-2018-0040 https://www.cve.org/CVERecord?id=CVE-2018-0040 Référence CVE CVE-2018-0041 https://www.cve.org/CVERecord?id=CVE-2018-0041 Référence CVE CVE-2018-0042 https://www.cve.org/CVERecord?id=CVE-2018-0042 Référence CVE CVE-2018-1000005 https://www.cve.org/CVERecord?id=CVE-2018-1000005 Référence CVE CVE-2018-1000007 https://www.cve.org/CVERecord?id=CVE-2018-1000007 Référence CVE CVE-2018-1000115 https://www.cve.org/CVERecord?id=CVE-2018-1000115 Référence CVE CVE-2018-1000120 https://www.cve.org/CVERecord?id=CVE-2018-1000120 Référence CVE CVE-2018-1000121 https://www.cve.org/CVERecord?id=CVE-2018-1000121 Référence CVE CVE-2018-1000122 https://www.cve.org/CVERecord?id=CVE-2018-1000122 Référence CVE CVE-2018-2579 https://www.cve.org/CVERecord?id=CVE-2018-2579 Référence CVE CVE-2018-2588 https://www.cve.org/CVERecord?id=CVE-2018-2588 Référence CVE CVE-2018-2599 https://www.cve.org/CVERecord?id=CVE-2018-2599 Référence CVE CVE-2018-2603 https://www.cve.org/CVERecord?id=CVE-2018-2603 Référence CVE CVE-2018-2618 https://www.cve.org/CVERecor

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2018-002718Memcached における入力確認に関する脆弱性

Memcached には、入力確認に関する脆弱性が存在します。

Official advisory ↗

KISA KrCERT/CC · Korean · KNVD-4839Memcached 서비스를 이용한 분산 서비스 거부 공격 주의 권고

o Memcached 서비스를 악용한 대규모 분산 서비스 거부 공격이 발생하여 주의 필요 o 공격자는 Memcached 서비스의 UDP 포트(11211)에 악성 패킷을 전송하여 피해 대상 시스템에 서비스 거부를 유발시킬 수 있으므로, 아래 대응 방안에 따른 조치 권고 ##### □ 주요 내용 o Memcached의 네트워크 메시지 볼륨 크기에 대한 검증 미흡으로 트래픽을 임의로 증폭 시킬 수 있는 서비스 거부 공격 (CVE-2018-1000115) ※ 공격자는 Memcached 서비스의 UDP 기본 포트(11211)를 통해 공격 수행 ##### □ 대응 방안 (※ 자사 서비스 환경을 고려한 보호 대책 적용) (1) UDP 포트 기본 비활성화 설정 - Memcached-1.5.6 버전으로 업데이트 [1] - 명령어를 통한 UDP 비활성화 설정 방법 ? Memcached 실행 시 ‘-U 0’ 옵션을 추가하여 실행 [2] (2) 접근 통제 설정 - 방화벽 설정 ? 인가된 IP만 Memcached 서비스에 접근할 수 있도록 접근 통제 실시 ? 외부에서 UDP 포트(11211)를 사용하지 않는 경우 해당 포트 차단 - 설정 파일 편집 ? 로컬 호스트에서만 UDP 포트에 접근할 수 있도록 설정 # vi /etc/memcached.conf -l 127.0.0.1 # service memcached restart ##### □ 용어 정리 o Memcached 서비스 : 자주 호출해야 하는 데이터를 메모리에 저장하여 부하를 감소 시켜줌

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Patch available
Affected: n/a
Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action: Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 5 Mar 2018 · Last source change 5 Aug 2024, 12:33 UTC · CWE-400 · Uncontrolled Resource Consumption

CVE recordCVE.org · 5.1

CVSS sourceNIST NVD

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-09-01

European sourceENISA EUVD · EUVD-2018-1842

Product sourceUnavailable

Remediation sourceCVE/CNA references

CWE sourceNIST NVD

NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗

1 Sep 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2018-1842 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2018-1842"}
ENISA EUVD ↗
5 Aug 2024, 12:33 UTC
Vendor guidanceAuthoritative vendor guidance changed: added patch: github.com/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974; added remediation: github.com/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974; removed vendor advisory: access.redhat.com/RHBA-2018:2140; removed vendor advisory: access.redhat.com/RHSA-2018:1593; 5 further removals.
Before
vendor advisory: access.redhat.com/RHBA-2018:2140 · vendor advisory: access.redhat.com/RHSA-2018:1593 · vendor advisory: access.redhat.com/RHSA-2018:1627 · 4 more references
After
patch: github.com/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974 · remediation: github.com/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974
github.com ↗
5 Aug 2024, 12:33 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
n/a · Fixed: No fixed version is explicitly recorded in the structured CVE data.
After
n/a · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
CNA ↗
5 Aug 2024, 12:33 UTC
Remediation statusRemediation status changed from Awaiting fix to Patch available.
Before
Awaiting fix
After
Patch available
github.com ↗
5 Aug 2024, 12:33 UTC
SeveritySeverity changed from Unknown to High.
Before
Unknown
After
High
NIST NVD ↗
5 Aug 2024, 12:33 UTC
CVSS scoreCVSS score changed from not recorded to 7.5 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Before
not recorded
After
7.5 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
NIST NVD ↗
5 Aug 2024, 12:33 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2018-03-05CVE published

2024-08-05Fixed release or patch reference recorded

ENISA EUVD · EUVD-2018-1842↗Patch or update reference↗CVE authority or vendor reference↗Public exploit reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

Affected product: Uncontrolled Resource Consumption

Published severity in operational context

Evidence used

Compensating controls

Verification

Release-specific package status

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2018-1842

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication