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CVE-2018-0739

Constructed ASN.1 types with a recursive definition could exceed the stack

Published: Mar 27, 2018Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-674
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
19.3%
Top 3.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-674

Affected Products

opensslopenssl
LibraryLibrary
OSS Libraries / generic-library
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
OpenSSLOpenSSL
LibraryLibrary
OSS Libraries / generic-library
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
openssloss-projectUSOSS Librariesaka open ssl
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
canonical ltd.commercialGBOperating Systemsaka canonical
and 19 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
oracle.com
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
oracle.com
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
oracle.com
and 261 more references View all →

Timeline

Published
Mar 27, 2018
Last Updated
Nov 21, 2024

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