OpenSSL up to 1.0.0i SSLv3 Downgrade POODLE cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in OpenSSL up to 1.0.0i and classified as critical. This impacts an unknown function of the component SSLv3 Downgrade Handler. Performing a manipulation results in cryptographic issue (POODLE). This vulnerability is identified as CVE-2014-3566. The attack can be initiated remotely. There is not any exploit available. Due to its background and reception, this vulnerability has an historic impact. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in OpenSSL up to 1.0.0i (Network Encryption Software). This affects an unknown part of the component SSLv3 Downgrade Handler. The manipulation with an unknown input leads to a cryptographic issue vulnerability (POODLE). CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue.

The issue has been introduced in 03/29/2010. The weakness was released 10/14/2014 by Adam Langley, Bodo Möller, Thai Duong and Krzysztof Kotowicz with Google Security Team as This POODLE Bites: Exploiting The SSL 3.0 Fallback as confirmed security advisory (Website). It is possible to read the advisory at googleonlinesecurity.blogspot.co.uk. This vulnerability is uniquely identified as CVE-2014-3566 since 05/14/2014. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/29/2026). The attack technique deployed by this issue is T1600 according to MITRE ATT&CK. Due to its background and reception, this vulnerability has a historic impact. The advisory points out:

Encryption in SSL 3.0 uses either the RC4 stream cipher, or a block cipher in CBC mode. (...) The most severe problem of CBC encryption in SSL 3.0 is that its block cipher padding is not deterministic, and not covered by the MAC (Message Authentication Code): thus, the integrity of padding cannot be fully verified when decrypting. Padding by 1 to L bytes (where L is the block size in bytes) is used to obtain an integral number of blocks before performing blockwise CBC (cipher­block chaining) encryption

It is declared as attacked. The vulnerability was handled as a non-public zero-day exploit for at least 1660 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 80921 (Amazon Linux AMI : java-1.7.0-openjdk (ALAS-2015-471) (POODLE)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86129 (IBM WebSphere Application Server Multiple Vulnerabilities (swg21697368)-Deprecated). The advisory illustrates:

The weakness is the easiest to exploit if there’s an entire block of padding, which (before encryption) consists of L­1 arbitrary bytes followed by a single byte of value L­1

Upgrading to version 0.9.8zc, 1.0.0o or 1.0.1j eliminates this vulnerability. It is possible to mitigate the problem by applying the configuration setting SSLProtocol All -SSLv2 -SSLv3. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (97013), Zero-Day.cz (308), Tenable (80921), SecurityFocus (BID 70574†) and OSVDB (113251†). Further details are available at googleonlinesecurity.blogspot.co.uk. Entries connected to this vulnerability are available at VDB-68000, VDB-68040, VDB-68743 and VDB-68695. Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Webserver (Apache, nginx, ...)
  • Webbrowser (Google Chrome, Microsoft Internet Explorer, Mozilla Firefox, ...)
  • Mail Server (Sendmail, Postfix, ...)
  • PBX (Asterisk)

Productinfo

Type

Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.4
NVD Vector: 🔍

ADP CISA Base Score: 3.4
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: POODLE
Class: Cryptographic issue / POODLE
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 80921
Nessus Name: Amazon Linux AMI : java-1.7.0-openjdk (ALAS-2015-471) (POODLE)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 65594
OpenVAS Name: CentOS Update for java CESA-2015:0085 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ssl_version.rb
MetaSploit Name: HTTP SSL/TLS Version Detection (POODLE scanner)
MetaSploit File: 🔍

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: OpenSSL 0.9.8zc/1.0.0o/1.0.1j
Config: SSLProtocol All -SSLv2 -SSLv3
Suricata ID: 2019415
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

03/29/2010 🔍
05/14/2014 +1507 days 🔍
10/14/2014 +153 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/15/2014 +1 days 🔍
10/15/2014 +0 days 🔍
10/15/2014 +0 days 🔍
10/21/2014 +6 days 🔍
01/23/2015 +94 days 🔍
05/29/2026 +4143 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: This POODLE Bites: Exploiting The SSL 3.0 Fallback
Researcher: Adam Langley, Bodo Möller, Thai Duong, Krzysztof Kotowicz
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3566 (🔍)
GCVE (CVE): GCVE-0-2014-3566
GCVE (VulDB): GCVE-100-67791

OVAL: 🔍

CERT: 🔍
X-Force: 97013 - Multiple products SSLv3 protocol information disclosure, Medium Risk
SecurityFocus: 70574 - OpenSSL CVE-2014-3566 Man In The Middle Information Disclosure Vulnerability
Secunia: 61825 - Apple iOS Multiple Vulnerabilities, Not Critical
OSVDB: 113251
SecurityTracker: 1031029

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/15/2014 10:21
Updated: 05/29/2026 00:37
Changes: 10/15/2014 10:21 (108), 05/02/2019 17:35 (10), 07/10/2024 20:49 (24), 11/27/2024 22:05 (6), 01/26/2025 22:49 (1), 05/29/2026 00:37 (11)
Complete: 🔍
Cache ID: 216::103

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