Denial of Service Vulnerability in Go's crypto/x509 Package
CVE-2018-16875

5.9MEDIUM

Key Information:

Vendor

[unknown]

Status
Golang
Vendor
CVE Published:
14 December 2018

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-16875?

The crypto/x509 package in Go versions prior to 1.10.6 and 1.11.x before 1.11.3 allows attackers to exploit chain verification processes. This may lead to excessive CPU usage due to crafted inputs, potentially causing denial of service. Go TLS servers that accept client certificates, as well as TLS clients, are particularly susceptible, making it critical for users to update to secure versions to maintain system integrity.

Affected Version(s)

golang 1.10.6

golang 1.11.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

poc-cve-2018-16875
Created by alexzorin

References

http://www.securityfocus.com/bid/106230
vdb-entryx_refsource_BID
https://security.gentoo.org/glsa/201812-09
vendor-advisoryx_refsource_GENTOO
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16875
x_refsource_CONFIRM

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.