FKIE_CVE-2015-7744

Vulnerability from fkie_nvd - Published: 2016-01-22 15:59 - Updated: 2025-04-12 10:46
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS handshakes, aka a Lenstra attack.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://wolfssl.com/wolfSSL/Docs-wolfssl-changelog.htmlRelease Notes, Vendor Advisory
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlVendor Advisory
cve@mitre.orghttp://www.securitytracker.com/id/1034708Broken Link, Third Party Advisory, VDB Entry
cve@mitre.orghttps://people.redhat.com/~fweimer/rsa-crt-leaks.pdfExploit, Third Party Advisory
cve@mitre.orghttps://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/Exploit, Third Party Advisory
cve@mitre.orghttps://wolfssl.com/wolfSSL/Blog/Entries/2015/9/17_Two_Vulnerabilities_Recently_Found%2C_An_Attack_on_RSA_using_CRT_and_DoS_Vulnerability_With_DTLS.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://wolfssl.com/wolfSSL/Docs-wolfssl-changelog.htmlRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1034708Broken Link, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://people.redhat.com/~fweimer/rsa-crt-leaks.pdfExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://wolfssl.com/wolfSSL/Blog/Entries/2015/9/17_Two_Vulnerabilities_Recently_Found%2C_An_Attack_on_RSA_using_CRT_and_DoS_Vulnerability_With_DTLS.htmlVendor Advisory
Impacted products
Vendor Product Version
wolfssl wolfssl *
opensuse leap 42.1
opensuse opensuse 13.1
opensuse opensuse 13.2
mariadb mariadb *
mariadb mariadb *
mariadb mariadb *
To clipboard 

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  "cveTags": [],
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      "value": "wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS handshakes, aka a Lenstra attack."
    },
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      "lang": "es",
      "value": "wolfSSL (anteriormente CyaSSL) en versiones anteriores a 3.6.8 no maneja correctamente fallos asociados con el proceso Chinese Remainder Theorem (CRT) cuando permiten el intercambio de claves ef\u00edmeras sin optimizaciones de memoria baja en un servidor, lo que hace que sea m\u00e1s f\u00e1cil para atacantes remotos obtener claves privadas RSA mediante la captura de un apret\u00f3n de manos TLS, tambi\u00e9n conocido como un ataque Lenstra."
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  ],
  "id": "CVE-2015-7744",
  "lastModified": "2025-04-12T10:46:40.837",
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          "authentication": "NONE",
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  "published": "2016-01-22T15:59:04.570",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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