The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), including modification of Rights Block to remove or relax access control
IEEE · Standard
7.8HighCVSS 3.0
Recommended action
Within 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Fix not verified
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2017-4614
No EUVD known-exploited evidence
ENISA has published the identifier mapping but no EUVD description has been stored yet.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Fix not verified
01
What, why and how
The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), as well as the management of access rights for such IP, including modification of Rights Block to remove or relax access control. The methods are flawed and, in the most egregious cases, enable attack vectors that allow recovery of the entire underlying plaintext IP. Implementations of IEEE P1735 may be weak to cryptographic attacks that allow an attacker to obtain plaintext intellectual property without the key, among other impacts.
What
The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), as well as the management of access rights for such IP, including modification of Rights Block to remove or relax access control. The methods are flawed and, in the most egregious cases, enable attack vectors that allow recovery of the entire underlying plaintext IP. Implementations of IEEE P1735 may be weak to cryptographic attacks that allow an attacker to obtain plaintext intellectual property without the key, among other impacts.
Why
The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.
How
An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), as well as the management of access rights for such IP, including modification of Rights Block to remove or relax access control. The methods are flawed and, in the most egregious cases, enable attack vectors that allow recovery of the entire underlying plaintext IP. Implementations of IEEE P1735 may be weak to cryptographic attacks that allow an attacker to obtain plaintext intellectual property without the key, among other impacts.
Why
The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.
How
An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
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
local access → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
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-310. Open the MITRE definition for the exact weakness description.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.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
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-310
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
IEEE P1735 は、電子回路設計データの暗号化やアクセス管理に関する規格です。IEEE P1735 に対して、複数の攻撃手法が報告されており、電子回路設計データが解読されたり、設計者が意図していない回路を混入される可能性があります。 暗号の問題 (CWE-310) IEEE P1735 規格では、電子回路設計データの暗号化やアクセス管理手法について規定しています。 IEEE P1735 に対して、パディングオラクル攻撃のようによく知られている手法を応用した攻撃や EDA ツール特有の挙動を使った攻撃など、複数の攻撃手法が報告されています。EDA ツール特有の挙動を使った攻撃手法としては、複数の電子回路設計データを組み合わせてひとつのチップを合成する際に、処理内容に応じて HDL Syntax エラーが発生することを利用し、EDA ツールをオラクルとして電子回路設計データの解読を行うことが可能であると報告されています。 さらに、暗号化された電子回路設計データを細工し、設計者が意図していない回路を追加することも可能であると報告されています。 大規模な回路設計では、異なる所有者が提供する複数の電子回路設計データが使用されます。IEEE P1735 は、暗号化やアクセス制御の仕組みにより各データの内容を保護する手段を規定するものですが、暗号化強度が弱い、セキュリティ上重要となる実装上の選択について何も言及しておらず実装まかせにしている、などの問題があります。 IEEE P1735 に対して報告された脆弱性に対応して、以下の CVE 番号が採番されています。IEEE P1735 に対応している EDA ツールなどの製品がこれらの影響を受ける可能性があります。 * CVE-2017-13091: improperly specified padding in CBC mode allows use of an EDA tool as a decryption oracle. * CVE-2017-13092: improperly specified HDL syntax allows use of an EDA tool as a decryption oracle * CVE-2017-13093: modification of encrypted IP cyphertext to insert hardware trojans. * CVE-2017-13094: modification of the encryption key and insertion of hardware trojans in any IP. * CVE-2017-13095: modification of a license-deny response to a license grant. * CVE-2017-13096: modification of Rights Block to get rid of or relax access control. * CVE-2017-13097: modification of Rights Block to get rid of or relax license requirement. 本件の詳細については報告者の論文をご参照ください。 報告者の論文 https://eprint.iacr.org/2017/828.pdf
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.
Fix not verified
Affected
Standard: P1735
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04
Evidence and provenance
Published 13 Jul 2018 · Last source change 5 Aug 2024, 18:58 UTC · CWE-310
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-2017-4614
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD modified after enrichment
Core structured fields are present and their contributing authorities are shown above.
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.
CVE-2017-13096: The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), including modification of Rights Block to remove or relax access control | BlackTree