Nettle
CVE-2018-16869
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V6 - Authentication Timing-safe comparisons
|
| Impact | CVSS score of 5.7 (MEDIUM). Attack characteristics: physical attack vector, high complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. Rated medium severity (CVSS 5.7), this vulnerability is no authentication required. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-203. A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server. Affected products include: Nettle Project Nettle.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
The ecc_256_modp function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces inco
x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in
The ecc_256_modq function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces inco
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption. Rated critical severity (CVSS 9.8), th
A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, ED
The RSA and DSA decryption code in Nettle makes it easier for attackers to discover private keys via a cache side channe
A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. Rated high severity
GitHub PoC
Exploit-DB