CVE-2018-16151

mediumpriority · track · 31EPSS 0.019 · 79 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.89% (79th) EPSS

CVSS 5 · medium

Is it mine?

46 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

EPSS · scored 2026-10-27

In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data after the encoded algorithm OID during PKCS#1 v1.5 signature verification. Similar to the flaw in the same version of strongSwan regarding digestAlgorithm.parameters, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347USprimaryCWE-347US

affected products (46)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Canonical Ltd. Ubuntu≤ 14.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 16.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 18.04 LTSfstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.1fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.0fstec_bduRU
Novell Inc. SUSE Enterprise Storage≤ 5fstec_bduRU
Novell Inc. SUSE Enterprise Storage≤ 4fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Basesystem≤ 15fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Basesystem≤ 15 SP1fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Development Tools≤ 15fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Development Tools≤ 15 SP1fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for additional PackageHub≤ 15fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP3-LTSSfstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP5fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP3-BCLfstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP1-LTSSfstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP1fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP4fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP3fstec_bduRU

showing 20 of 46

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2018-09-26modified 2026-06-17

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references (29)

External citations — patches, advisories, analysis.

scry

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