medium
5
CWE
264
Advisory Published
CVE Published
Updated

CVE-2011-1473

First published: Sun Mar 13 2011(Updated: )

** DISPUTED ** OpenSSL before 0.9.8l, and 0.9.8m through 1.x, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-5094. NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
OpenSSL libcrypto=0.9.8m
OpenSSL libcrypto=0.9.8m-beta1
OpenSSL libcrypto=0.9.8n
OpenSSL libcrypto=0.9.8o
OpenSSL libcrypto=0.9.8p
OpenSSL libcrypto=0.9.8r
OpenSSL libcrypto=0.9.8s
OpenSSL libcrypto=0.9.8t
OpenSSL libcrypto=0.9.8u
OpenSSL libcrypto=0.9.8v
OpenSSL libcrypto=0.9.8w
OpenSSL libcrypto=0.9.8x
OpenSSL libcrypto<=0.9.8k

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-1473?

    CVE-2011-1473 has a designation that indicates a denial of service vulnerability potentially affecting server performance.

  • How do I fix CVE-2011-1473?

    To mitigate CVE-2011-1473, upgrade OpenSSL to a version that is newer than 0.9.8l.

  • What systems are affected by CVE-2011-1473?

    CVE-2011-1473 affects multiple versions of OpenSSL including 0.9.8k and earlier versions.

  • Can CVE-2011-1473 be exploited remotely?

    Yes, CVE-2011-1473 can be exploited remotely, allowing attackers to initiate numerous renegotiations.

  • What are the consequences of an exploit of CVE-2011-1473?

    Exploiting CVE-2011-1473 may lead to denial of service through excessive CPU consumption due to continuous renegotiations.

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