Vulnerability Monitor

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CVE-2011-0766

The random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP ssh library before R14B03, uses predictable seeds based on the current time, which makes it easier for remote attackers to guess DSA host and SSH session keys.

Security Impact Summary

CVE-2011-0766 is a security vulnerability that . Impacting 3 products from erlang, from erlang, from ssh organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-05-31T20:55:01.780

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-310

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	erlang	crypto	≤ 2.0.2.1	Yes
Application	erlang	erlang\/otp	r11b-5	Yes
Application	erlang	erlang\/otp	r12b-5	Yes
Application	erlang	erlang\/otp	r13b	Yes
Application	erlang	erlang\/otp	r13b02-1	Yes
Application	erlang	erlang\/otp	r13b03	Yes
Application	erlang	erlang\/otp	r13b04	Yes
Application	erlang	erlang\/otp	r14a	Yes
Application	erlang	erlang\/otp	r14b	Yes
Application	erlang	erlang\/otp	r14b01	Yes
Application	erlang	erlang\/otp	r14b02	Yes
Application	ssh	ssh	≤ 2.0.4	Yes

References

http://secunia.com/advisories/44709 Vendor Advisory ([email protected])
http://www.kb.cert.org/vuls/id/178990 Patch, Third Party Advisory, US Government Resource ([email protected])
http://www.securityfocus.com/bid/47980 Third Party Advisory, VDB Entry ([email protected])
https://github.com/erlang/otp/commit/f228601de45c5b53241b103af6616453c50885a5 Patch ([email protected])
http://secunia.com/advisories/44709 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/178990 Patch, Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/47980 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/erlang/otp/commit/f228601de45c5b53241b103af6616453c50885a5 Patch (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For erlang's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.