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OpenSSL Malformed ECParameters causes infinite loop (CVE-2015-1788)

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OpenSSL Malformed ECParameters causes infinite loop (CVE-2015-1788)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
06/12/2015
Created
07/25/2018
Added
06/15/2015
Modified
01/03/2017

Description

The BN_GF2m_mod_inv function in crypto/bn/bn_gf2m.c in OpenSSL before 0.9.8s, 1.0.0 before 1.0.0e, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b does not properly handle ECParameters structures in which the curve is over a malformed binary polynomial field, which allows remote attackers to cause a denial of service (infinite loop) via a session that uses an Elliptic Curve algorithm, as demonstrated by an attack against a server that supports client authentication.

Solution(s)

  • http-openssl-0_9_8-upgrade-0_9_8_s
  • http-openssl-1_0_0-upgrade-1_0_0_e
  • http-openssl-1_0_1-upgrade-1_0_1_n
  • http-openssl-1_0_2-upgrade-1_0_2_b

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