CVE & CISA-KEV Catalog

CVE-2020-5929

MEDIUM
5.9
CVSS v3
NVD

Description

In versions 13.0.0-13.0.0 HF2, 12.1.0-12.1.2 HF1, and 11.6.1-11.6.2, BIG-IP platforms with Cavium Nitrox SSL hardware acceleration cards, a Virtual Server configured with a Client SSL profile, and using Anonymous (ADH) or Ephemeral (DHE) Diffie-Hellman key exchange and Single DH use option not enabled in the options list may be vulnerable to crafted SSL/TLS Handshakes that may result with a PMS (Pre-Master Secret) that starts in a 0 byte and may lead to a recovery of plaintext messages as BIG-IP TLS/SSL ADH/DHE sends different error messages acting as an oracle. Similar error messages when PMS starts with 0 byte coupled with very precise timing measurement observation may also expose this vulnerability.

CWE-203

How to fix

Remediation Available
big-ip access policy managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip advanced firewall managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip advanced web application firewallNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip analyticsNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip application acceleration managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip application security managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip ddos hybrid defenderNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip domain name systemNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip fraud protection serviceNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip global traffic managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip link controllerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip local traffic managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
big-ip policy enforcement managerNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD
ssl orchestratorNVD
Affected:>= 12.1.0, < 12.1.2Fixed in:12.1.2CVE-2020-5929derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.21%probability of exploitation in 30 days
65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-203 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2017-5753Medium5.694%-Fix
CVE-2003-0190Medium5.077%-Fix
CVE-2017-5715Medium5.674%-Fix
CVE-2018-3639Medium5.561%-Fix
CVE-2023-28770High7.558%-Fix
CVE-2004-1602Medium5.031%--
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Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.