CVE-2019-3465: n/a Rob Richards XmlSecLibs: Improper Verification of Cryptographic Signature

Distribution release	Source package	Vendor state	Fixed version	Evidence
Debian bookwormbookworm · source	`simplesamlphp`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.17.6-2`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · source	`simplesamlphp`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.17.6-2`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · source	`simplesamlphp`	Vendor fix publishedDebian records a fixed source-package version for this release.	`1.17.6-2`	Debian Security Tracker ↗Source updated 5 Oct 2026

Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

Rob Richards XmlSecLibs, all versions prior to v3.0.3, as used for example by SimpleSAMLphp, performed incorrect validation of cryptographic signatures in XML messages, allowing an authenticated attacker to impersonate others or elevate privileges by creating a crafted XML message.

What

Why

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Why

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

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.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: a network path → Improper Verification of Cryptographic Signature → gain additional privileges
Attack surface: Network
Privileges required: Low: a basic authenticated account is required
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-347 ↗
CWE-347: Improper Verification of Cryptographic Signature. The product does not verify, or incorrectly verifies, the cryptographic signature for data.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: 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.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.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.

NetworkPrivilege escalationCWE-347

Official authority intelligence

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

ENISA EUVD · EUVD-2019-0760Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

CERT-FR · French · CERTFR-2020-AVI-011Multiples vulnérabilités dans Tenable Tenable.sc

De multiples vulnérabilités ont été découvertes dans Tenable Tenable.sc. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Official advisory ↗

CERT-FR · French · CERTFR-2019-AVI-657Multiples vulnérabilités dans Tenable.sc

.org/CVERecord?id=CVE-2018-1303 Référence CVE CVE-2018-1312 https://www.cve.org/CVERecord?id=CVE-2018-1312 Référence CVE CVE-2018-1333 https://www.cve.org/CVERecord?id=CVE-2018-1333 Référence CVE CVE-2018-17189 https://www.cve.org/CVERecord?id=CVE-2018-17189 Référence CVE CVE-2018-17199 https://www.cve.org/CVERecord?id=CVE-2018-17199 Référence CVE CVE-2019-1547 https://www.cve.org/CVERecord?id=CVE-2019-1547 Référence CVE CVE-2019-1551 https://www.cve.org/CVERecord?id=CVE-2019-1551 Référence CVE CVE-2019-1552 https://www.cve.org/CVERecord?id=CVE-2019-1552 Référence CVE CVE-2019-1563 https://www.cve.org/CVERecord?id=CVE-2019-1563 Référence CVE CVE-2019-3465 https://www.cve.org/CVERecord?id=CVE-2019-3465 Gestion détaillée du document le 31 décembre 2019 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2019-011857Rob Richards XmlSecLibs におけるデジタル署名の検証に関する脆弱性

Rob Richards XmlSecLibs には、デジタル署名の検証に関する脆弱性が存在します。

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: Rob Richards XmlSecLibs: All versions prior to version 3.0.3
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 7 Nov 2019 · Last source change 4 Aug 2024, 19:12 UTC · CWE-347 · Improper Verification of Cryptographic Signature

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-2019-0760

Product sourceCNA

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-2019-0760 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2019-0760"}
ENISA EUVD ↗
4 Aug 2024, 19:12 UTC
Vendor guidanceAuthoritative vendor guidance changed: added patch: github.com/0a53d3c3aa87564910cae4ed01416441d3ae0db5; added remediation: github.com/0a53d3c3aa87564910cae4ed01416441d3ae0db5; removed vendor advisory: debian.org/dsa-4560; removed vendor advisory: lists.fedoraproject.org/7KID7C4AZPYYIZQIPSLANP4R2RQR6YK3; 8 further removals.
Before
vendor advisory: debian.org/dsa-4560 · vendor advisory: lists.fedoraproject.org/7KID7C4AZPYYIZQIPSLANP4R2RQR6YK3 · vendor advisory: lists.fedoraproject.org/AB34ILMJ67CUROBOR6YPKB46VHXLOAJ4 · 7 more references
After
patch: github.com/0a53d3c3aa87564910cae4ed01416441d3ae0db5 · remediation: github.com/0a53d3c3aa87564910cae4ed01416441d3ae0db5
github.com ↗
4 Aug 2024, 19:12 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
All versions prior to version 3.0.3 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
After
All versions prior to version 3.0.3 · 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 ↗
4 Aug 2024, 19:12 UTC
Remediation statusRemediation status changed from Awaiting fix to Patch available.
Before
Awaiting fix
After
Patch available
github.com ↗
4 Aug 2024, 19:12 UTC
SeveritySeverity changed from Unknown to High.
Before
Unknown
After
High
NIST NVD ↗
4 Aug 2024, 19:12 UTC
CVSS scoreCVSS score changed from not recorded to 8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Before
not recorded
After
8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
NIST NVD ↗
4 Aug 2024, 19:12 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2019-11-07CVE published

2024-08-04Fixed release or patch reference recorded

ENISA EUVD · EUVD-2019-0760↗Patch or update reference↗CVE authority or vendor 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.

n/a Rob Richards XmlSecLibs: Improper Verification of Cryptographic Signature

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-2019-0760

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication