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CVE-2018-6829

Published: Feb 7, 2018Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-327
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.8%
Top 24.2%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-327

Affected Products

n/an/a
libgcryptgnupg
Library
Security Products / pki-crypto
Oracle Communications Interactive Session RecorderOracle Corp.
On-prem
Databases / relational
libgcrypt11Сообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
gnupgoss-projectSecurity Productsaka libgcrypt, libksba
oracle corp.commercialUSDatabasesaka oracle
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/weikengchen/attack-on-libgcrypt-elgamal/wiki
github.com
https://lists.gnupg.org/pipermail/gcrypt-devel/2018-February/004394.html
lists.gnupg.org
https://github.com/weikengchen/attack-on-libgcrypt-elgamal
github.com
and 4 more references View all →

Timeline

Published
Feb 7, 2018
Last Updated
Nov 21, 2024

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